Do not autofocus the description field

What does this MR do and why?

Do not autofocus the description field

In new MRs and issues, don't autofocus the description field, since the title is already autofocused.

See #409976 (comment 1385248953)

Backport for !120296 (merged)

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• This MR is backporting a bug fix, documentation update, or spec fix, previously merged in the default branch.
• The original MR has been deployed to GitLab.com (not applicable for documentation or spec changes).
• This MR has a severity label assigned (if applicable).
• This MR has been approved by a maintainer (only one approval is required).
• Ensure the e2e:package-and-test-ee job has either succeeded or been approved by a Software Engineer in Test.

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• Refer to the patch release runbook for engineers and maintainers for guidance.
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