Improve reliability of E2E test protected_tags_spec.rb
We suspect that the user is not added to the project in time when checking the tags page of the project. This means the `new tag` button isn't present which causes the test to fail occasionally. browser_ui/3_create/repository/protected_tags_spec.rb https://gitlab.com/gitlab-org/gitlab/-/issues/422910#note_1523982336
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