This was done by mistake in #36758, but it's not necessary and actual
causes a bug.
`property_changed` is only emitted via `emit_changed()`, which already
has default values for `p_field` and `p_changing`.
Also reverted to using `String` for now to be on the safe side, even if
it's inconsistent with `emit_changed()`. I had only changed it
partially in #36758 so it was inconsistent. It probably does make sense
to port `EditorInspector` and related property editors to use
`StringName` where relevant, but that's for a dedicated PR.
Fixes#36799.
- Fix `callable_mp` bindings to methods which used to have default
arguments passed to `bind_method`. We now have to re-specify them
manually when connecting.
- Re-add `GroupsEditor::update_tree` binding.
- Misc code quality changes along the way.
Happy new year to the wonderful Godot community!
We're starting a new decade with a well-established, non-profit, free
and open source game engine, and tons of further improvements in the
pipeline from hundreds of contributors.
Godot will keep getting better, and we're looking forward to all the
games that the community will keep developing and releasing with it.
