Focus state being reset Fixes #1040

[priyang12]

Fixes #1040

Technical details

Fixed Focus reset by adding data-page attribute in the button elements in pagination and grabbing the button in afterUpdate() method and manually putting the focus on the element.

Screenshots

Screen.Recording.2022-03-22.at.1.58.00.PM.mov

I have changed the focus color to red for better visualization but in PR I changed back to the original.

Checklist

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• My code follows the established code style of the repository.
• I added tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

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[codecov-commenter]

Codecov Report

Merging #1212 (6e6e7c0) into master (4be6ffe) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1212   +/-   ##
=======================================
  Coverage   93.39%   93.39%           
=======================================
  Files         113      113           
  Lines        4332     4332           
=======================================
  Hits         4046     4046           
  Misses        286      286           

Flag	Coverage Δ
pytest-backend	93.39% <ø> (ø)

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[pavish]

@priyang12 Thanks for the PR! I have a comment, upon resolution of which we could merge this PR in.

[pavish]

@priyang12 Looks good to me.

I added a small commit which changes the scope of the pagebutton: cd6dcce. It was not essential to keep it at the component level.