Note IDE-only tools when creating an agent from the AI Catalog

What does this MR do?

Readers who create an agent from the AI Catalog now see that some tools work only in the IDE. The "From the AI Catalog" tab gets the same note that !222395 (merged) added to the "From a project" tab, and both notes now say "the GitLab UI" to match the rest of the page.

Related issues

Related to #588974 (closed)

Author's checklist

• Optional. Consider taking the GitLab Technical Writing Fundamentals course.
• Follow the:
  • Documentation process.
  • Documentation guidelines.
  • Style Guide.
• If you're adding a new page, add the product availability details under the H1 topic title.
• 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.

AI-Generated Content Disclosure: Claude Code wrote this change. Claude Code also checked the note against the merged note in !222395 (merged), the IDE-only section of doc/user/duo_agent_platform/agents/tools.md, and the agent form in ee/app/assets/javascripts/ai/catalog/components/ai_catalog_agent_form.vue, and ran the project's Vale and markdownlint-cli2 rules on the changed page.