Adds confirmation prompt to container image repository delete modal

What does this MR do and why?

Adds an additional layer of safety before deletion of container images by adding a confirmation prompt when attempting to delete image repository.

Implements !66612 (merged) on container registry list page.

The input prompt is changed from project name to the following:

Repository full path	Confirmation
mygroup/myproject (base repository)	myproject
mygroup/myproject/foo (sub repository)	foo
mygroup/myproject/foo/bar (sub repository)	foo/bar

Screenshots or screen recordings

How to set up and validate locally

1. Setup & enable Container Registry https://gitlab.com/gitlab-org/gitlab-development-kit/-/blob/main/doc/howto/registry.md
2. In the terminal, run these commands to push images to test base repository & sub repository

   $ docker pull hello-world
   $ docker tag hello-world 127.0.0.1:5000/<project-path> && docker push 127.0.0.1:5000/<project-path>
   $ docker tag hello-world 127.0.0.1:5000/<project-path>/testing && docker push 127.0.0.1:5000/<project-path>/testing
   $ docker tag hello-world 127.0.0.1:5000/<project-path>/testing/hello-world && docker push 127.0.0.1:5000/<project-path>/testing/hello-world

3. Visit the container registry list page for the project
4. Click the delete icon to show the modal & confirm it shows the input prompt
5. click through the image repository & confirm the modal works similarly

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

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

Fixes #406751 (closed)