fix: update FilterableMultiSelect onMenuChange behavior

[adamalston]

Closes #18270

Updated FilterableMultiSelect's onMenuChange behavior.

Changelog

Changed

• Updated FilterableMultiSelect's onMenuChange behavior.

Testing / Reviewing

yarn test packages/react/src/components/MultiSelect/__tests__/FilterableMultiSelect-test.js

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.92%. Comparing base (74e2cb7) to head (fad487c).
Report is 22 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #18606   +/-   ##
=======================================
  Coverage   84.91%   84.92%           
=======================================
  Files         408      408           
  Lines       14551    14557    +6     
  Branches     4765     4772    +7     
=======================================
+ Hits        12356    12362    +6     
+ Misses       2033     2032    -1     
- Partials      162      163    +1     

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[Gururajj77]

Hey @adamalston , could you write more about what are the changes you did and how it affects the component's behaviour??

[adamalston]

I've updated the logic so that:

• When the component is controlled (i.e., the open prop is provided), onMenuChange is called exactly once on mount (if open is true) and doesn't trigger again on re-renders with the same open value.
• In uncontrolled mode, the callback isn't called on mount, but will be triggered when a user interacts with the component.

The tests reflect these scenarios.

[tay1orjones]

LGTM! 👍

[adamalston]

I see the security scan is failing. I guess it didn't like me merging main into the branch. Doesn't seem like something I should need to revert though.

[ariellalgilmore]

LGTM!

[carbon-automation]

Hey there! v11.77.0 was just released that references this issue/PR.