Auto-size row labels for long strings

This makes us automatically size the row labels after building the
memory editor in case the driver has very long special memory labels.

Related to #10478

chirp/wxui/memedit.py

@@ -1659,6 +1659,7 @@ def update_font(self, refresh=True):
             self.refresh()
         wx.CallAfter(self._grid.AutoSizeColumns, setAsMin=False)
         wx.CallAfter(self._grid.AutoSizeRows, setAsMin=False)
+        wx.CallAfter(self._grid.SetRowLabelSize, wx.grid.GRID_AUTOSIZE)
 
     def cb_copy(self, cut=False):
         rows = self.get_selected_rows_safe()