GraphQL/Descriptions cop: update description & schemas [RUN AS-IF-FOSS]

What does this MR do?

This MR contains the missing changes for !46721 (merged): the result of autocorrecting the new offenses for GraphQL/Descriptions, and the updates to the autogenerated GraphQL schema files and docs.

The changes have been separated from !46721 (merged) to make it easier for that change to be reviewed and discussed.

Merging

It's intended that this MR will be merged rather than !46721 (merged).

As close to merging as possible we should:

1. Autocorrect any missing GraphQL/Descriptions offenses: bundle exec rubocop --auto-correct --only Graphql/Descriptions
2. Generate latest docs files: bundle exec rake gitlab:graphql:compile_docs
3. Generate latest schema files: bundle exec rake gitlab:graphql:schema:dump
4. Commit changes and push

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