Attempt to prevent control hiding problems on GTK

Fixes https://gitlab.com/kicad/code/kicad/-/issues/8902

pcbnew/dialogs/dialog_footprint_properties.cpp

@@ -613,6 +613,8 @@ void DIALOG_FOOTPRINT_PROPERTIES::adjustGridColumns( int aWidth )
 
     // Update the width of the 3D panel
     m_3dPanel->AdjustGridColumnWidths( aWidth );
+
+    Layout();
 }