[BD-46] feat: replace custom submit and reset btns with IconButton

[khudym]

Description

Replace custom Searchfield buttons with IconButton
Issue

Deploy Preview

Merge Checklist

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[openedx-webhooks]

Thanks for the pull request, @khudym!

When this pull request is ready, tag your edX technical lead.

[khudym]

Old PR: #2719

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9face09) 92.83% compared to head (56ba018) 92.83%.
Report is 67 commits behind head on release/chip-searchfield-pagination.

Additional details and impacted files

@@                           Coverage Diff                           @@
##           release/chip-searchfield-pagination    #2842      +/-   ##
=======================================================================
- Coverage                                92.83%   92.83%   -0.01%     
=======================================================================
  Files                                      235      235              
  Lines                                     4241     4240       -1     
  Branches                                  1029     1029              
=======================================================================
- Hits                                      3937     3936       -1     
  Misses                                     300      300              
  Partials                                     4        4              

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