fix: adds backward compatibility for innerRefs in OverflowMenu

[2nikhiltom]

Closes #19046

adds backward compatibility for innerRef

Changelog

New

innerRef is also merged if passed
mergeRefs(triggerRef, innerRef, ref)

Added test case against the functionality

Changed

@deprecated Use the standard React ref instead.
marked innerRef as deprecated

Removed

• {{removed thing}}

Testing / Reviewing

CI checks should pass
yarn test packages/react/src/components/OverflowMenu

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.97%. Comparing base (517562c) to head (aef0e73).
Report is 7 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #19086   +/-   ##
=======================================
  Coverage   84.96%   84.97%           
=======================================
  Files         391      391           
  Lines       14490    14493    +3     
  Branches     4776     4779    +3     
=======================================
+ Hits        12312    12315    +3     
  Misses       2029     2029           
  Partials      149      149           

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