Draft: Refactor unit test report test case list for vue-virtual-scroll-list upgrade

What does this MR do?

For !41887 (closed)

This MR refactors app/assets/javascripts/pipelines/components/test_reports/test_suite_table.vue in order to make it compatible with app/assets/javascripts/vue_shared/components/smart_virtual_list.vue now that it uses vue-virtual-scroll-list v2.x.

This MR is meant to be reviewed separately and merged into the larger refactoring MR (!41887 (closed)), and some pipeline failures are expected because we still have other components to convert. spec/frontend/pipelines/test_reports/test_suite_table_spec.js should be passing though.

Screenshots

No visual changes

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done