refactor: delete ReactAttr

[adamalston]

Closes #19111

Deleted ReactAttr.

Changelog

Changed

• Changed React namespace imports to default imports.

Removed

• Deleted ReactAttr.

Testing / Reviewing

Check for type errors in files.

I left a TODO with a question that hopefully someone can answer.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.57%. Comparing base (cd03c8a) to head (049ea4d).
Report is 55 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #19113   +/-   ##
=======================================
  Coverage   84.57%   84.57%           
=======================================
  Files         381      381           
  Lines       14436    14436           
  Branches     4711     4763   +52     
=======================================
  Hits        12209    12209           
+ Misses       2073     2072    -1     
- Partials      154      155    +1     

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[adamalston]

I don't see a change in the diff in Percy. Not sure why it's failing.

[preetibansalui]

This code seems outdated — the comment says it was from June 2020, likely for V10 or earlier.

[adamalston]

It originated in #4820 which was targetted at a v10 issue.

[tay1orjones]

Seems removable to me

[tay1orjones]

Seems removable to me

[carbon-automation]

Hey there! v11.83.0 was just released that references this issue/PR.