Pass outside wxPG a modified clone of wxEVT_TEXT event instead of hacking current event object.

Using a clone of event (with PG id) instead of replacing id in the currently processed event coming from wxPGTextCtrlEditor seems to be less intrusive and safer action.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78328 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775