refactor(ui): Use android:name for FragmentContainerView

This commit updates the layout files to use the `android:name` attribute instead of the `class` attribute for `FragmentContainerView` to declare the fragment class. This is the modern, recommended practice.

It also removes minor whitespace and `onClick` attributes that are no longer necessary.

- Replaces the `class` attribute with `android:name` for all instances of `SupportMapFragment` and `SupportStreetViewPanoramaFragment` within `FragmentContainerView` tags across multiple demo layouts.
- Removes unnecessary `onClick` attributes from checkboxes in `layers_demo.xml`.
- Cleans up minor whitespace in `camera_clamping_demo.xml`, `street_view_panorama_navigation_demo.xml`, `indoor_demo.xml`, and `ground_overlay_demo.xml`.

Author: dkhawk

ApiDemos/project/common-ui/src/main/res/layout/background_color_customization_demo.xml

@@ -37,7 +37,7 @@
       android:layout_width="0dp"
       android:layout_height="0dp"
       map:backgroundColor="#fff0b2dd"
-      class="com.google.android.gms.maps.SupportMapFragment"
+      android:name="com.google.android.gms.maps.SupportMapFragment"
       app:layout_constraintTop_toBottomOf="@+id/top_bar"
       app:layout_constraintBottom_toBottomOf="parent"
       app:layout_constraintStart_toStartOf="parent"

ApiDemos/project/common-ui/src/main/res/layout/background_color_customization_programmatic_demo.xml

@@ -38,7 +38,7 @@
 
     <androidx.fragment.app.FragmentContainerView
         android:id="@+id/map"
-        class="com.google.android.gms.maps.SupportMapFragment"
+        android:name="com.google.android.gms.maps.SupportMapFragment"
         android:layout_width="0dp"
         android:layout_height="0dp"
         app:layout_constraintBottom_toBottomOf="parent"

ApiDemos/project/common-ui/src/main/res/layout/basic_demo.xml

@@ -32,7 +32,7 @@
 
     <androidx.fragment.app.FragmentContainerView
         android:id="@+id/map"
-        class="com.google.android.gms.maps.SupportMapFragment"
+        android:name="com.google.android.gms.maps.SupportMapFragment"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         app:layout_constraintBottom_toBottomOf="parent"

ApiDemos/project/common-ui/src/main/res/layout/camera_clamping_demo.xml

@@ -36,7 +36,7 @@
         app:layout_constraintTop_toBottomOf="@+id/container"
         app:layout_constraintBottom_toBottomOf="parent"
         android:id="@+id/map"
-        class="com.google.android.gms.maps.SupportMapFragment"
+        android:name="com.google.android.gms.maps.SupportMapFragment"
         android:layout_width="fill_parent"
         android:layout_height="fill_parent"
         map:cameraMaxZoomPreference="14.0"
@@ -93,7 +93,6 @@
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:layout_weight="0.5"
-        
                 android:text="@string/clamp_latlng_adelaide" />
 
             <com.google.android.material.button.MaterialButton

ApiDemos/project/common-ui/src/main/res/layout/camera_demo.xml

@@ -32,7 +32,7 @@
 
     <androidx.fragment.app.FragmentContainerView
         android:id="@+id/map"
-        class="com.google.android.gms.maps.SupportMapFragment"
+        android:name="com.google.android.gms.maps.SupportMapFragment"
         android:layout_width="match_parent"
         android:layout_height="match_parent" />
 

ApiDemos/project/common-ui/src/main/res/layout/circle_demo.xml

@@ -134,7 +134,7 @@
 
         <androidx.fragment.app.FragmentContainerView
             android:id="@+id/map"
-            class="com.google.android.gms.maps.SupportMapFragment"
+            android:name="com.google.android.gms.maps.SupportMapFragment"
             android:layout_width="match_parent"
             android:layout_height="match_parent" />
 

ApiDemos/project/common-ui/src/main/res/layout/cloud_styling_basic_demo.xml

@@ -34,7 +34,7 @@
 
     <androidx.fragment.app.FragmentContainerView
         android:id="@+id/map"
-        class="com.google.android.gms.maps.SupportMapFragment"
+        android:name="com.google.android.gms.maps.SupportMapFragment"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         map:cameraTargetLat="47.6089945"

ApiDemos/project/common-ui/src/main/res/layout/events_demo.xml

@@ -31,7 +31,7 @@
 
     <androidx.fragment.app.FragmentContainerView
         android:id="@+id/map"
-        class="com.google.android.gms.maps.SupportMapFragment"
+        android:name="com.google.android.gms.maps.SupportMapFragment"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         app:layout_constraintTop_toBottomOf="@+id/top_bar" />

ApiDemos/project/common-ui/src/main/res/layout/ground_overlay_demo.xml

@@ -31,7 +31,7 @@
 
     <androidx.fragment.app.FragmentContainerView
         android:id="@+id/map"
-        class="com.google.android.gms.maps.SupportMapFragment"
+        android:name="com.google.android.gms.maps.SupportMapFragment"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         app:layout_constraintTop_toBottomOf="@+id/container" />
@@ -65,7 +65,6 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_below="@+id/transparencySeekBar"
-
             android:text="@string/switch_image" />
 
         <com.google.android.material.checkbox.MaterialCheckBox

ApiDemos/project/common-ui/src/main/res/layout/indoor_demo.xml

@@ -34,7 +34,7 @@
         android:id="@+id/map"
         android:layout_width="0dp"
         android:layout_height="0dp"
-        class="com.google.android.gms.maps.SupportMapFragment"
+        android:name="com.google.android.gms.maps.SupportMapFragment"
         app:layout_constraintTop_toBottomOf="@id/top_bar"
         app:layout_constraintBottom_toTopOf="@+id/scrollView"
         app:layout_constraintStart_toStartOf="parent"
@@ -67,7 +67,6 @@
                     android:id="@+id/focused_bulding_info_button"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
-
                     android:text="@string/focused_building_info" />
 
                 <com.google.android.material.button.MaterialButton