fix: delayed bounds when moving/resizing and preventing default (#34284)

Co-authored-by: Shelley Vohr <[email protected]>

shell/browser/native_window_views_win.cc

@@ -296,6 +296,7 @@ bool NativeWindowViews::PreHandleMSG(UINT message,
                              &prevent_default);
       if (prevent_default) {
         ::GetWindowRect(hwnd, reinterpret_cast<RECT*>(l_param));
+        pending_bounds_change_.reset();
         return true;  // Tells Windows that the Sizing is handled.
       }
       return false;
@@ -334,6 +335,7 @@ bool NativeWindowViews::PreHandleMSG(UINT message,
       NotifyWindowWillMove(dpi_bounds, &prevent_default);
       if (!movable_ || prevent_default) {
         ::GetWindowRect(hwnd, reinterpret_cast<RECT*>(l_param));
+        pending_bounds_change_.reset();
         return true;  // Tells Windows that the Move is handled. If not true,
                       // frameless windows can be moved using
                       // -webkit-app-region: drag elements.