Fix LoadSave window frame not resizing when toggling previews

distribution/changelog.txt

@@ -9,6 +9,7 @@
 - Fix: [#24711] The map smoothing function only partially works for custom height map image files.
 - Fix: [#24773] The new ride window debug authors does not show the correct authors for non legacy ride objects.
 - Fix: [#24775] The scenery and new ride windows do not filter by file name or identifier correctly for non legacy objects.
+- Fix: [#24794] The load/save browser does not resize cleanly when toggling the preview sidebar.
 - Fix: [#24824] The Air Powered Vertical Coaster top section track piece has vertical tunnels (original bug).
 - Fix: [#24825] The River Rapids flat-to-gentle track piece tunnels are incorrect on the gentle side.
 - Fix: [#24826] The Junior Roller Coaster flat-to-steep track piece tunnels are incorrect.

src/openrct2-ui/windows/LoadSave.cpp

@@ -918,6 +918,8 @@ namespace OpenRCT2::Ui::Windows
             {
                 Config::Save();
                 Invalidate();
+                ResizeFrame();
+                OnResize();
             }
         }