Update to use FieldWidget Attribute

Thank you for the merge request, @vinayakamk47. Changes look good so far. There a couple of things to still to do:

1. Update .gitlabci.yml to support testing on previous major
2. Update link_selection_handler.info.yml

Updated core_version_requirement to support Drupal 10.3+. Allowed testing on previous major on .gitlabci.yml

The only thing is, I don't see "Stage: test" on MR. Maybe it needs to be enabled somewhere in the repository settings?

Sorry, I'm no expert here

Thanks for your fixes on the merge request, @dlevchik.

The module currently does not have any unit or functional tests, but it still runs through phpcs and phpstan jobs in the pipeline. In the merge request, the Code Quality and Test summary collapsible sections show any current test or "test" result.