Improve error message for failed bulk vulnerability status update

Context

This improvement was suggested by @svedova in !119476 (merged).

As is

At the moment, the error message displays the raw IDs of all the vulnerabilities that could not be updated, but this isn't super useful.

Proposal

Keep the current error message, but make all IDs individual hyperlinks that link to their vulnerability detail page.

Implementation steps

• When updates fail, instead of constructing the updateErrorText from rejected, use rejected in the template to loop over all failed vulnerabilities.
• Store the whole gid in rejected instead of only the last part, so it can be used to match with selected vulnerabilities.
• For each failed vulnerablity, show gl-link component which uses vulnerabilityPath to construct the href and split last part of gid to only short last part of gid, e.g. "gid://gitlab/Vulnerability/2214321" -> "2214321". This is currently also done, but within the handleSubmit method when constructing the updateErrorText

Verification steps

• Go to security-reports vulnerability report
• Select a couple of vulnerabilities
• Mock a graphql error by going to network tab in chrome devtools, search for "/api/graphql", right-click on one of the entries, and select "Block request URL"
• Change status of the selected vulnerabilities to anything you like
• Verify that the IDs of the vulnerabilities that failed to update appear (like before), now each ID is a hyperlink.
• Verify that clicking an ID goes to that vulnerability detail page