Moved change in button to JS

android/app/src/main/java/com/reactnativenavigation/params/parsers/TitleBarButtonParamsParser.java

         }
         result.color = new StyleParams.Color(ColorParser.parse(bundle.getString("color")));
         result.showAsAction = parseShowAsAction(bundle.getString("showAsAction"));
-        result.enabled = !bundle.getBoolean("disabled", false);
+        result.enabled = bundle.getBoolean("enabled", true);
         result.eventId = bundle.getString("id");
         return result;
     }

src/deprecated/platformSpecificDeprecated.android.js

   const rightButtons = getRightButtons(screen);
   if (rightButtons) {
     rightButtons.forEach(function(button) {
+      button.enabled = !button.disabled;
       if (button.icon) {
         const icon = resolveAssetSource(button.icon);
         if (icon) {