[8.18] [8.18] New sub-feature priv for case assignees (backport #6641) #6645
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Partially addresses elastic/docs-content#333. Makes minor changes to future-proof docs for giving full access to manage cases and settings.
Preview: Cases requirements
This is an automatic backport of pull request [8.18] New sub-feature priv for case assignees #6641 done by Mergify.