Copy max width of wxGridCellTextEditor when cloning it.

Previously the max number of characters that could be entered into the editor
was lost when it was cloned, making it impossible to really limit the user
entry.

Closes #15175.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73899 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/grideditors.h

@@ -52,7 +52,7 @@ private:
 class WXDLLIMPEXP_ADV wxGridCellTextEditor : public wxGridCellEditor
 {
 public:
-    wxGridCellTextEditor();
+    wxEXPLICIT wxGridCellTextEditor(size_t maxChars = 0);
 
     virtual void Create(wxWindow* parent,
                         wxWindowID id,
@@ -77,7 +77,7 @@ public:
     virtual void SetParameters(const wxString& params);
 
     virtual wxGridCellEditor *Clone() const
-        { return new wxGridCellTextEditor; }
+        { return new wxGridCellTextEditor(m_maxChars); }
 
     // added GetValue so we can get the value which is in the control
     virtual wxString GetValue() const;