fix detection of android emulator (facebook#35111)

Summary:
at some point, the `Build.FINGERPRINT` of the emulator has changed and no longer includes `generic` as an option.

It apparently now, on all platforms, includes `google/sdk_gphone` at the beginning. Older emulators may still include `generic` in the `Build.FINGERPRINT` so we should maintain that check too.

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[Android] [Fixed] - Fix android emulator detection for packager host

Pull Request resolved: facebook#35111

Test Plan: When running on a modern emulator, ensure that the packager attempts to load from `10.0.2.2`.

Reviewed By: cipolleschi

Differential Revision: D41266071

Pulled By: GijsWeterings

fbshipit-source-id: 43115dbde6a411fe2ebde23e720dff4812a4309f

ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/AndroidInfoHelpers.java

@@ -32,7 +32,8 @@ private static boolean isRunningOnGenymotion() {
   }
 
   private static boolean isRunningOnStockEmulator() {
-    return Build.FINGERPRINT.contains("generic");
+    return Build.FINGERPRINT.contains("generic")
+        || Build.FINGERPRINT.startsWith("google/sdk_gphone");
   }
 
   public static String getServerHost(Integer port) {