weeklies: Macro: Fix shortcuts in macro editor #26807

- The initial commit to block shortcuts in text edit fields
  (particularly for MacOS, where those shortcuts would activate FreeCAD
  functionality rather than text edit functionality) made a wrong
  assumption.
- It assumed that there were no text edit fields where we would want to
  actually use application shortcuts. In retrospect, this was very
  wrong, and I completely missed the macro editor.
- For now, it should be fine to change the field to only cover
  'LineEdit'. I cannot imagine a case where you'd want to (e.g.) save
  text/document from a LineEdit, but if anyone knows of one then please
  let me know.
- This does mean there are some quirks. For example in the materials
  editor, the description is a TextEdit field. Some text editing
  shortcuts won't work in here now (similar to how they didn't before
  the original commit that I made).
- I've since learned that freecad also has a text editor functionality,
  I've tested that now Cmd+S works for save as it should.