has_method for Android Plugins does not work. please tell the users so they don't use it for testing.

**Your Godot version:**
4 beta 10, 3.5.1 checked.

**Issue description:**
I was trying to confirm that my base definition for Implementation is working. i used ```has_method``` to verify the creation of a godot recognized method. however while the method was valid to be called (and would even return a value to me) ```has_method``` would not recognize it. I ended up browsing a lot of code and demo not knowing this.

**URL to the documentation page:**
Https://docs.godotengine.org/en/stable/tutorials/platform/android/android_plugin.html

**Further Considerations**
Please someone that is fully familiar with godot's bindings, fill in the documentation on what doesn't work at the moment. so godot users will know what to expect and what to not use till fixes are done.