fix(android): correct lint issues for various API mis-use

Highlights:

- enforce CallSuper so TaskExecutors will always clean up correctly
- enforce Locale translation in string manipulaton (Fixes invertase#3917)

android/src/main/java/io/invertase/firebase/auth/ReactNativeFirebaseAuthModule.java

@@ -61,6 +61,7 @@
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Objects;
 import java.util.concurrent.TimeUnit;
@@ -1885,7 +1886,7 @@ private WritableMap getJSError(Exception exception) {
     }
 
     code = code
-      .toLowerCase()
+      .toLowerCase(Locale.ROOT)
       .replace("error_", "")
       .replace('_', '-');
     error.putString("code", code);