Migrate Spec and Doc QA selectors to testid

What does this MR do and why?

As per gitlab-org/quality/quality-engineering/team-tasks#1822 (closed) Migrate Spec and Doc QA data-qa-selector selectors to data-testid

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

How to set up and validate locally

Run affected specs ie.

yarn jest ./spec/frontend/vue_shared/components/form/input_copy_toggle_visibility_spec.js

bundle exec rspec ./spec/helpers/search_helper_spec.rb