I've done some googling and some searching here and about all I can find is this bug report which ends with a comment about being added to a 3.2 milestone: https://github.com/godotengine/godot/issues/25151
Obviously there is no 3.2 release date, but as far as I know 3.2 isn't even in alpha release so I'm guessing it's not going to be anytime soon. Unfortunately programming a fix in Godot is beyond me, but if someone else has patched it I can take a stab at recompiling. I'm not even sure if it's the Android template or Godot or both that need rebuilt.
What I do know is no controller = no Android TV.