chore: set standalone define to UWB_WEBVIEW (removed VUPLEX_STANDALONE)

Author: ImmutableJeffrey

sample/ProjectSettings/ProjectSettings.asset

@@ -776,7 +776,7 @@ PlayerSettings:
   webGLPowerPreference: 2
   scriptingDefineSymbols:
     Android: VUPLEX_STANDALONE
-    Standalone: UWB_WEBVIEW;VUPLEX_STANDALONE
+    Standalone: UWB_WEBVIEW
     iPhone: 
   additionalCompilerArguments:
     Standalone: