Document that CVS for DS becomes GA

What does this MR do?

Document that Continuous Vulnerability Scanning (CVS) for Dependency Scanning becomes Globally Available (GA).

• Update CVS docs.
  • Remove Experiment label from title.
  • Add Generally available in GitLab x.y to revision history.
  • Remove NOTE about CVS being an Experiment.
  • Remove or update FEATURE FLAG block if needed.
  • Remove reference to toggle in the Configuration section.
• Update Vulnerability Report > Pipeline
  • Remove bloc about bug/limitation that will be resolved by CVS.

This doc update should be merged when the new global_dependency_scanning_on_advisory_ingestion flag is enabled by default. See !135816 (merged)

Related issues

#427422 (closed)

Author's checklist

• Optional. Consider taking the GitLab Technical Writing Fundamentals course.
• Follow the:
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  • Documentation guidelines.
  • Style Guide.
• If you're adding or changing the main heading of the page (H1), ensure that the product tier badge is added.
• If you are a GitLab team member, request a review based on:
  • The documentation page's metadata.
  • The associated Technical Writer.

If you are a GitLab team member and only adding documentation, do not add any of the following labels:

• ~"frontend"
• ~"backend"
• ~"type::bug"
• ~"database"

These labels cause the MR to be added to code verification QA issues.

Reviewer's checklist

Documentation-related MRs should be reviewed by a Technical Writer for a non-blocking review, based on Documentation Guidelines and the Style Guide.

If you aren't sure which tech writer to ask, use roulette or ask in the #docs Slack channel.

• If the content requires it, ensure the information is reviewed by a subject matter expert.
• Technical writer review items:
  • Ensure docs metadata is present and up-to-date.
  • Ensure the appropriate labels are added to this MR.
  • Ensure a release milestone is set.
  • If relevant to this MR, ensure content topic type principles are in use, including:
    • The headings should be something you'd do a Google search for. Instead of Default behavior, say something like Default behavior when you close an issue.
    • The headings (other than the page title) should be active. Instead of Configuring GDK, say something like Configure GDK.
    • Any task steps should be written as a numbered list.
    • If the content still needs to be edited for topic types, you can create a follow-up issue with the docs-technical-debt label.
• Review by assigned maintainer, who can always request/require the reviews above. Maintainer's review can occur before or after a technical writer review.