macOS dings when key is pressed

[FeodorFitsner]

Problem: pressing keys produces "ding" sound on macOS.
Repro code: https://github.com/flet-dev/examples/blob/main/python/controls/page/keyboard-events.py
Possible solution: flutter/flutter#74287 (comment)

[ndonkoHenri]

Such an old flutter bug popping up just now?

[nikhgupta]

@ndonkoHenri I reached out in the Discord channel. I am creating an app using Flet and found that keyboard shortcuts work but produce a ding sound each time regardless of whether that keybinding is defined or not.

I can add a PR if I get insight into where to make these changes.
Based on this code, I believe we need to add a similar FocusNode in this file?

Ref: flutter/flutter#74287

[FeodorFitsner]

Re: ding on macOS - honestly, I thought it's just me having that annoying sound 😂