Resolved Braille Input mode accessibility

[shubham-shinde-442]

Resolves: #20554

Renamed Braille TextArea to include Modes.

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[shoogle]

The code changes are welcome, but they don't fix the problem at hand, at least not on Windows with NVDA or Narrator.

When tabbing to the braille panel, it correctly says "Normal mode" or "Note input mode".

However, when you're already in the braille panel and you press N, it doesn't say anything. That's what this issue is about.

FYI, PR #13383 fixed a similar issue but in the score rather than the braille panel. You probably need a similar solution here, i.e. notify the accessibility system that item's name has changed, but you'd have to do it in a way that works with general accessible items, not just score elements.

[shoogle]

@shubham-shinde-442, I managed to get the screen reader to announce the name change. See my code.

I had to stop the score going into note input mode, but that's not acceptable so you'll need to find out why putting the score in note input mode masks the name change in the braille panel.

Ideally we wouldn't have to create a fake sibling just to get speech to work, but it's an acceptable hack if no other solution is readily available.