### Godot version

v4.0.beta16.official [518b9e580]

### System information

-

### Issue description

The description of `Control._has_point(position)`-virtual function is outdated likely due to #66688. 

> Note: If you want to check if a point is inside the control, you can use `get_rect().has_point(point)`.

After #66688, get_rect() returns the Controls rect relative to its parent, while the point is relative to the Control.

Also, the note refers to `point` while it likely should refer to the parameter `position`. That said, in this case, I think the incorrect name is better and the parameter of the function should be changed to`point` to avoid shadowing `Control.position`.

Suggested fixes:
1. Change the note to match the new behavior (`Rect2(Vector2.ZERO, size).has_point(point)` should work; verify) OR introduce `get_local_rect()` that matches the old behavior and recommend using it instead.
2. Change the name of the `position` parameter to `point` in `Control._has_point(position)`

### Steps to reproduce

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### Minimal reproduction project

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if (Object::cast_to<Viewport>(p_at)) {
		return; 
	}
	Control *c = Object::cast_to<Control>(p_at);
	if (c && c != this && c->get_focus_mode() == FOCUS_ALL && c->is_visible_in_tree()) {
		Point2 points[4];
		Transform2D xform = c->get_global_transform();
		points[0] = xform.xform(Point2());
		points[1] = xform.xform(Point2(c->get_size().x, 0));
		points[2] = xform.xform(c->get_size());
		points[3] = xform.xform(Point2(0, c->get_size().y));
		real_t min = 1e7;
		for (int i = 0; i < 4; i++) {
			real_t d = p_dir.dot(points[i]);
			if (d < min) {
				min = d;
			}
		}
		if (min > (p_min - CMP_EPSILON)) {
			for (int i = 0; i < 4; i++) {
				Vector2 la = p_points[i];
				Vector2 lb = p_points[(i + 1) % 4];
				for (int j = 0; j < 4; j++) {
					Vector2 fa = points[j];
					Vector2 fb = points[(j + 1) % 4];
					Vector2 pa, pb;
					real_t d = Geometry2D::get_closest_points_between_segments(la, lb, fa, fb, pa, pb);
					
					if (d < r_closest_dist) {
						r_closest_dist = d;