test(pagination): add unit tests for user actions and external updates

[ychavoya]

Closes #17496

Added unit tests to increase the coverage of the Pagination component

Changelog

New

• Added unit tests for Pagination related to user actions (when users click or select something)
• Added unit tests for Pagination related to external actions (when the props are updated externally)

See coverage in main:

Versus this PR:

Testing / Reviewing

• Unit tests should pass

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.17%. Comparing base (993fb9c) to head (e06a9bb).

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #17649      +/-   ##
==========================================
+ Coverage   78.96%   79.17%   +0.21%     
==========================================
  Files         408      408              
  Lines       14020    14020              
  Branches     4381     4377       -4     
==========================================
+ Hits        11071    11101      +30     
+ Misses       2782     2752      -30     
  Partials      167      167              

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