protected tag deletable without filling out the pop-up
### Summary
I can delete protected tags without filling anything out in the pop-up asking me to fill out the tag name
### Steps to reproduce
Create a protected tag, press the delete button in the UI and just press enter
### What is the current *bug* behavior?
Tag gets deleted without confirmation
### What is the expected *correct* behavior?
The UI should show me a message saying I haven't filled it out yet
### Output of checks
This bug happens on GitLab.com
### Possible fixes
I would guess the bug is in https://gitlab.com/gitlab-org/gitlab/-/blob/master/app/assets/javascripts/tags/components/delete_tag_modal.vue#L91 for the client-side validation part but there is also no server side validation it was actually filled out
issue