Fix disconnection between Gizmo and inspector values on BakedLightmap
Fix disconnection between Gizmo and inspector values on BakedLightmap

After adding `_change_notify("extents");` to `set_extents()` method in `BakedLightmap` class
the issue was fixed

Fix disconnection between Gizmo and inspector values on BakedLightmap

Remove unnecessary `_change_notify("bake_extents")` call from `set_extents()`

ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot