Update css to make vulnerability title more prominent

What does this MR do?

Removes the text-body css class to make the vulnerability title blue and underlined when hovered as requested in the issue:

We will implement the link highlight change as seen in #292595[b05_Row-hover-use-cases.png]

1. On-row-hover: underline the description/link-item.

• this signals to the user that they can click on this to view the details page.

2. On-description/link-item hover: change the style to the link style (Underlined-blue)

• This reinforces the link is a link in GitLab.

Screenshots (strongly suggested)

before	after

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

Related to #292595 (closed)