Migrate to Pajamas compliant buttons in ee/app/views/projects/mirrors/_table_pull_row.html.haml

One or more buttons in ee/app/views/projects/mirrors/_table_pull_row.html.haml are not Pajamas compliant. See the parent epic &8153 for guidance on migration strategies.

Warning: This button is a clipboard_button These need a more advanced migration, and are probably best tackled all at once across the codebase. If you have one of these in the file you're looking at but are not prepared to take this on, feel free to ignore it in your MR. More information: &8153