possible to delete text with readOnly = true on Windows

[Dampfwalze]

if you have something like this: ZefyrEditor( controller: _controller, readOnly: true, ), the User will be able to delete the text in the editor.

showCursor: false, doesn't help

flutter --version:

Flutter 2.2.3 • channel stable • https://github.com/flutter/flutter.git Framework • revision f4abaa0735 (7 weeks ago) • 2021-07-01 12:46:11 -0700 Engine • revision 241c87ad80 Tools • Dart 2.13.4

[nipunasudha]

Confirmed happens on android too, testing on the emulator. Hopefully this is a simple fix.