fix other insert() overloads to work when inserting at the end of the list, continuation of r56299 (see #10103)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@58742 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/list.h

@@ -1045,12 +1045,12 @@ private:
         void insert(const iterator& it, size_type n, const_reference v = value_type())\
         {                                                                   \
             for(size_type i = 0; i < n; ++i)                                \
-                Insert(it.m_node, (const_base_reference)v);                 \
+                insert(it, v);                                              \
         }                                                                   \
         void insert(const iterator& it, const_iterator first, const const_iterator& last)\
         {                                                                   \
             for(; first != last; ++first)                                   \
-                Insert(it.m_node, (const_base_reference)*first);            \
+                insert(it, *first);                                         \
         }                                                                   \
         iterator erase(const iterator& it)                                  \
         {                                                                   \