Migrate Admin Groups and Users QA pages to testid

What does this MR do and why?

Migrates Admin Groups and Users QA pages QA test attribute from data-qa-selector to data-testid as part of gitlab-org/quality/quality-engineering/team-tasks#1735

Also updates Dangerfile for QA Selector

Screenshots or screen recordings

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Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

CHROME_HEADLESS=false bundle exec bin/qa Test::Instance::All http://gdk.test:3000/ ./qa/specs/features/browser_ui/1_manage/login/register_spec.rb


CHROME_HEADLESS=false bundle exec bin/qa Test::Instance::All http://gdk.test:3000/ ./qa/specs/features/ee/browser_ui/1_manage/group/restrict_by_ip_address_spec.rb

MR acceptance checklist

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