fix(sprite2d): Rect is not handling pixel snap

related https://github.com/godotengine/godot/issues/42985

(cherry picked from commit e892a92ad64144f5d041693385e9173feb2bc7f0)

scene/2d/sprite.cpp

@@ -378,6 +378,9 @@ Rect2 Sprite::get_rect() const {
 	Point2 ofs = offset;
 	if (centered)
 		ofs -= Size2(s) / 2;
+	if (Engine::get_singleton()->get_use_pixel_snap()) {
+		ofs = ofs.floor();
+	}
 
 	if (s == Size2(0, 0))
 		s = Size2(1, 1);