### Godot version

4.0.stable

### System information

Windows 10, Forward+, GTX 1070 driver 528.49

### Issue description

When trying to edit the handle mode of a bezier cruve key from the inspector tab, the mode doesn't change. It works fine when right clicking on the key and setting the handle mode from here though. 

https://user-images.githubusercontent.com/24484962/222379540-29d71b6d-ff0c-4a21-9905-9750d0581fda.mp4



### Steps to reproduce

On an animation track using a bezier curve, select a key and try to change the handle mode from the inspector tab

### Minimal reproduction project

N/A
ERR_FAIL_INDEX_V(idx, args.size(), false);
				String what = name.get_slice("/", 2);
				if (what == "type") {
					Variant::Type t = Variant::Type(int(p_value));
					if (t != args[idx].get_type()) {
						Callable::CallError err;
						if (Variant::can_convert_strict(args[idx].get_type(), t)) {
							Variant old = args[idx];
							Variant *ptrs[1] = { &old };
							Variant::construct(t, args.write[idx], (const Variant **)ptrs, 1, err);
						} else {
							Variant::construct(t, args.write[idx], nullptr, 0, err);
						}
						change_notify_deserved = true;
						d_new["args"] = args;
					}
				} else if (what == "value") {
					Variant value = p_value;
					if (value.get_type() == Variant::NODE_PATH) {
						_fix_node_path(value);
					}
					args.write[idx] = value;
					d_new["args"] = args;
					mergeable = true;
				}
			}
			if (mergeable) {
				undo_redo->create_action(TTR("Animation Change Call"), UndoRedo::MERGE_ENDS);
			} else {
				undo_redo->create_action(TTR("Animation Change Call"));