feat: upgrade react to v18

[huniafatima-99]

Description

This PR upgrades react to v18.

Issue Link

edx/edx-arch-experiments#959

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 62.12%. Comparing base (376386c) to head (17742fc).
Report is 22 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master     #653       +/-   ##
===========================================
- Coverage   74.06%   62.12%   -11.94%     
===========================================
  Files          51       32       -19     
  Lines         852      499      -353     
  Branches      204      142       -62     
===========================================
- Hits          631      310      -321     
+ Misses        211      180       -31     
+ Partials       10        9        -1     

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