Fix broken testsuite link if the suite contains a dot

What does this MR do?

If a testsuite contains a ., the link is broken and the user will just get a error message at the top (see images from #254643 (closed)). Right now this MR fix it by providing a fixed suite.json name because the name is not used at all by the endpoint.

Screenshots (strongly suggested)

see images in the description from #254643 (closed)

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team

Closes #254643 (closed)