Fix ribbon toolbar buttons getting stuck in pressed state too

This is the same as the previous commit (of which it should have been
part of) but for wxRibbonToolBar.

See wxWidgets#25019.

src/ribbon/toolbar.cpp

@@ -1202,6 +1202,7 @@ void wxRibbonToolBar::OnMouseEnter(wxMouseEvent& evt)
 {
     if(m_active_tool && !evt.LeftIsDown())
     {
+        m_active_tool->state &= ~wxRIBBON_TOOLBAR_TOOL_ACTIVE_MASK;
         m_active_tool = nullptr;
     }
 }