Applied patches for #15184 (wxRichTextAction fix for when the command identifier is wxRICHTEXT_CHANGE_OBJECT) and #15185 (Make adding/deleting wxRichTextTable rows and columns undoable)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73941 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/richtext/richtextbuffer.h

@@ -5961,6 +5961,12 @@ public:
     */
     wxRichTextObject* GetObject() const { return m_object; }
 
+    /**
+        Stores the object to replace the one at the position defined by the container address
+        without making an address for it (cf SetObject() and MakeObject()).
+    */
+    void StoreObject(wxRichTextObject* obj) { m_object = obj; }
+
     /**
         Sets the object to replace the one at the position defined by the container address
         and the action's range start position.