Fixes the old emoji menu showing a undefined category

Merged Phil Hughes requested to merge ph/324995/fixedUndefinedCategoryInOldEmojiMenu into master

What does this MR do?

Fixes the old emoji emoji menu showing a undefined category. This was caused by the frequently used category key existing for the new menu.

Screenshots (strongly suggested)

Does this MR meet the acceptance criteria?

Conformity

Availability and Testing

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 #324995 (closed)