### Godot version

4.2.dev 80de898d721f952dac0b102d48bb73d6b02ee1e8

### System information

OpenXR

### Issue description

The Godot 3 OpenXR plugin supported obtaining boundary/guardian information in order to obtain play space logic. While we do have a function in the `XRInterface` in Godot 4 that is supposed to retrieve this information (`get_play_area`) it is not implemented on the Godot 4 `OpenXRInterface`.

This logic needs to be ported.

### Steps to reproduce

Call `get_play_area`, be amazed by it not returning data :P

### Minimal reproduction project

Any XR project.
ERR_FAIL_NULL(openxr_api);
	ERR_FAIL_COND(p_tracker->positional_tracker.is_null());
	
	
	
	
	
	
	if (p_tracker->interaction_profile.is_null()) {
		return;
	}
	
	for (int i = 0; i < p_tracker->actions.size(); i++) {
		Action *action = p_tracker->actions[i];