ci: only build RNApp for arm64-v8a

Author: hurali97

apps/RNApp/android/gradle.properties

@@ -25,7 +25,7 @@ android.useAndroidX=true
 # Use this property to specify which architecture you want to build.
 # You can also override it from the CLI using
 # ./gradlew <task> -PreactNativeArchitectures=x86_64
-reactNativeArchitectures=armeabi-v7a,arm64-v8a,x86,x86_64
+reactNativeArchitectures=arm64-v8a
 
 # Use this property to enable support to the new architecture.
 # This will allow you to use TurboModules and the Fabric render in