Allow wxPGProperty::Hide() to be called on unattached property (see #11987)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64121 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/propgrid/property.h

@@ -1858,7 +1858,7 @@ public:
             By default changes are applied recursively. Set this paramter
             wxPG_DONT_RECURSE to prevent this.
     */
-    inline bool Hide( bool hide, int flags = wxPG_RECURSE );
+    bool Hide( bool hide, int flags = wxPG_RECURSE );
 
     bool IsExpanded() const
         { return (!(m_flags & wxPG_PROP_COLLAPSED) && GetChildCount()); }
@@ -2328,6 +2328,8 @@ protected:
                                   const wxVariantList* valueOverrides = NULL,
                                   wxPGHashMapS2S* childResults = NULL ) const;
 
+    bool DoHide( bool hide, int flags );
+
     void DoSetName(const wxString& str) { m_name = str; }
 
     /** Deletes all sub-properties. */