### Godot version

4.0.dev (d0398f62f0)

### System information

Windows 10

### Issue description

`PlaceholderTexture2D::size` property is registered as a `Vector2I`: https://github.com/godotengine/godot/blob/0daa86d70e7338506c37bee6b6e0c4aba7255d68/scene/resources/texture.cpp#L3389  
It should be a `Vector2`, as setter method use a `Vector2` and so parent class getter method.

### Steps to reproduce

N/A

### Minimal reproduction project

N/A
if (!atlas.is_valid()) {
		return;
	}
	Rect2 rc = region;
	if (rc.size.width == 0) {
		rc.size.width = atlas->get_width();
	}
	if (rc.size.height == 0) {
		rc.size.height = atlas->get_height();
	}
	Vector2 scale = p_rect.size / (region.size + margin.size);
	Rect2 dr(p_rect.position + margin.position * scale, rc.size * scale);
	atlas->draw_rect_region(p_canvas_item, dr, rc, p_modulate, p_transpose, filter_clip);
}
void AtlasTexture::draw_rect_region(RID p_canvas_item, const Rect2 &p_rect, const Rect2 &p_src_rect, const Color &p_modulate, bool p_transpose, bool p_clip_uv) const {
	
	if (!atlas.is_valid()) {
		return;
	}
	Rect2 dr;
	Rect2 src_c;
	get_rect_region(p_rect, p_src_rect, dr, src_c);
	atlas->draw_rect_region(p_canvas_item, dr, src_c, p_modulate, p_transpose, filter_clip);
}
bool AtlasTexture::get_rect_region(const Rect2 &p_rect, const Rect2 &p_src_rect, Rect2 &r_rect, Rect2 &r_src_rect) const {