fix: opaque navigation bar in edge to edge

When in edge to edge, i.e. using `AndroidEdgeToEdge` preference as
`true` and a `BackgroundColor` is provided, the navigation bar is opaque
with a background color set.

Author: Chuckytuh

templates/project/res/values/cdv_themes.xml

@@ -30,9 +30,6 @@
 
         <!-- Required: Set the theme of the Activity that directly follows your splash screen. -->
         <item name="postSplashScreenTheme">@style/Theme.Cordova.App.DayNight</item>
-
-        <!-- Disable Edge-to-Edge for SDK 35 -->
-        <item name="android:windowOptOutEdgeToEdgeEnforcement" tools:targetApi="35">true</item>
     </style>
 
     <style name="Theme.Cordova.App.DayNight" parent="Theme.AppCompat.DayNight.NoActionBar">