### 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
} break;
		case Animation::TYPE_METHOD: {
			Dictionary d = animation->track_get_key_value(track, key);
			if (name == "name") {
				ERR_FAIL_COND_V(!d.has("method"), false);
				r_ret = d["method"];
				return true;
			}
			ERR_FAIL_COND_V(!d.has("args"), false);
			Vector<Variant> args = d["args"];
			if (name == "arg_count") {
				r_ret = args.size();
				return true;
			}
			if (name.begins_with("args/")) {
				int idx = name.get_slice("/", 1).to_int();
				ERR_FAIL_INDEX_V(idx, args.size(), false);
				String what = name.get_slice("/", 2);
				if (what == "type") {
					r_ret = args[idx].get_type();
					return true;
				}
				if (what == "value") {
					r_ret = args[idx];
					return true;
				}
			}
		} break;
		case Animation::TYPE_BEZIER: {
			if (name == "value") {