CAM: Made Fanuc post processor compatible with FreeCAD 1.1.

Use setPlainText() if available, otherwise use setText().
Workaround for a regression from #23862.

src/Mod/CAM/Path/Post/scripts/fanuc_post.py

@@ -352,7 +352,13 @@ def export(objectslist, filename, argstring):
 
     if FreeCAD.GuiUp and SHOW_EDITOR:
         dia = PostUtils.GCodeEditorDialog()
-        dia.editor.setPlainText(gcode)
+
+        # Workaround for 1.1 while we wait for
+        # https://github.com/FreeCAD/FreeCAD/pull/26008 to be merged.
+        if hasattr(dia.editor, "setPlainText"):
+            dia.editor.setPlainText(gcode)
+        else:
+            dia.editor.setText(gcode)
         result = dia.exec_()
         if result:
             final = dia.editor.toPlainText()