Windows: Fix render resource not being released (#10233)

Release Notes:
- N/A

crates/gpui/src/platform/windows/window.rs

@@ -1297,6 +1297,7 @@ impl Drop for WindowsWindow {
     fn drop(&mut self) {
         unsafe {
             let _ = RevokeDragDrop(self.inner.hwnd);
+            self.inner.renderer.borrow_mut().destroy();
         }
     }
 }