[E2E] Migrate selectors for performance bar

What does this MR do and why?

As part of Phase out `data-qa-selector` and replace it wit... (gitlab-org/quality/quality-engineering/team-tasks#1822 - closed) migrates selectors from data-qa-selector to data-testid

How to set up and validate locally

1. bundle exec rspec qa/specs/features/browser_ui/14_analytics/performance_bar_spec.rb
2. See sample results in https://gitlab-qa-allure-reports.s3.amazonaws.com/e2e-package-and-test/jmd-performance-bar-selector-migration/1084114440/index.html#suites/c3dc2dfa12cc2ec16833bbb5a5d0f4c2/517b35bde4876309/

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.