feat: change to ctrlKey and open flyout

[wanglam]

Description

Change to use "ctrl + /" enable chat input focus.

Before:

After:

Issues Resolved

[List any issues this PR will resolve]

Check List

• New functionality includes testing.
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented.
  • New functionality has javadoc added
  • New functionality has user manual doc added
• Commits are signed per the DCO using --signoff

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (510b685) 93.26% compared to head (4504732) 93.26%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #88   +/-   ##
=======================================
  Coverage   93.26%   93.26%           
=======================================
  Files          46       46           
  Lines        1218     1218           
  Branches      291      291           
=======================================
  Hits         1136     1136           
  Misses         80       80           
  Partials        2        2           

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