fix: prevent bottom sheet close from breaking modal stack

Author: farfromrefug

src/bottomsheet/bottomsheet-common.ts

@@ -81,7 +81,9 @@ export abstract class ViewWithBottomSheetBase extends View {
         }
         const _rootModalViews = this._getRootModalViews();
         const modalIndex = _rootModalViews.indexOf(this);
-        _rootModalViews.splice(modalIndex, 1);
+        if (modalIndex !== -1) {
+            _rootModalViews.splice(modalIndex, 1);
+        }
 
         this._isAddedToNativeVisualTree = false;
         this._tearDownUI(true);