Display Scanner name on hover in the Report Type cell

This issue is part of #503371 (closed)

Why are we doing this work

Now that we've removed the Tool filter, and created the Report Type and Scanner vulnerability filters, we want to make sure the type of selected Scanner is visible for the user. When hovering on top of the Report Type cells, the Scanner name will appear

Relevant links

• Parent Issue: #503371 (closed)

• Issue for Creation of Scanner and Report Type Filters: #515303 (closed)

• Link to relevant discussion on creating this hover over: #503371 (comment 2288778613)

• Design Idea Link

Non-functional requirements

• Documentation: Not necessary, as stated here.
• Feature flag: This will be behind the vulnerability_report_type_scanner_filter feature flag.
• Performance: As this is a UI change only, performance doesn't seem to be a concern at the moment.
• Testing: Yes

Implementation plan

This can be implemented into one MR.

Verification steps

1. Go to https://gitlab.com/gitlab-org/govern/threat-insights-demos/personal-test-projects/webgoat.net/-/security/vulnerability_report/
2. Hover over the Report Type cell box. After the creation of this issue, a text box will be in place and will show e.g. Vendor: scannername. (See design under relevant links)