test(Tagset): add avt tests for complex states

[amal-k-joy]

Closes #6473

• Test latest accessibility-checker rulesets on various states of tag set
• Add tests for open and close states in popover/tooltip
• Add tests for open and close states in tag modal
• Review any additional states we may need to capture or add tests for : covered remove tags functionality and search functionality in the modal.
• Add keyboard navigation tests to AVT

How did you test and verify your work?

yarn avt

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.92%. Comparing base (3f45528) to head (29679f7).
Report is 14 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6524      +/-   ##
==========================================
+ Coverage   79.85%   79.92%   +0.07%     
==========================================
  Files         394      394              
  Lines       12877    12888      +11     
  Branches     4258     4267       +9     
==========================================
+ Hits        10283    10301      +18     
+ Misses       2594     2587       -7     

Components	Coverage Δ
ibm-products	∅ <ø> (∅)
ibm-products-web-components	∅ <ø> (∅)

[davidmenendez]

great work! just one small suggestion

[davidmenendez]

perfect! well done

[davidmenendez]

looks like you forgot to include the copyright header in the new util file

Error: Cannot find license text in: e2e/test-utils/simulateKeyPress.ts

[anamikaanu96]

LGTM