provide details on user task restrictions

[christinaausley]

Description

Closes #3665.

Users reported they missed out on the docs for the config options for task access restrictions for user groups.

As a result, we should update "Manage users" and "user groups" pages to reference the "user task access restrictions" settings for user groups.

https://docs.camunda.io/docs/components/console/manage-organization/manage-users/
https://docs.camunda.io/docs/components/concepts/access-control/user-groups/

When should this change go live?

• This is a bug fix, security concern, or something that needs urgent release support. (add bug or support label)
• This is already available but undocumented and should be released within a week. (add available & undocumented label)
• This is on a specific schedule and the assignee will coordinate a release with the DevEx team. (create draft PR and/or add hold label)
• This is part of a scheduled alpha or minor. (add alpha or minor label)
• There is no urgency with this change (add low prio label)

PR Checklist

• My changes are for an upcoming minor release and:
  • are in the /docs directory (version 8.8).
  • are in the /versioned_docs/version-8.7/ directory (version 8.7).
• My changes are for an already released minor and are in a /versioned_docs directory.

• I added a DRI, team, or delegate as a reviewer for technical accuracy and grammar/style:
  • Engineering team review
  • Technical writer review via @camunda/tech-writers unless working with an embedded writer.

[mesellings]

Lgtm, nothing blocking (I feel the first sentence could be reworded more concisely, but not sure how off the top of my head! 😊 - Nice job! 🚀

[christinaausley]

I know it wasn't blocking, but it was bothering me too @mesellings 😆 I trimmed up that first sentence. WDYT?

[mesellings]

I know it wasn't blocking, but it was bothering me too @mesellings 😆 I trimmed up that first sentence. WDYT?

Yes, awesome so much better - nice job! ⭐

[christinaausley]

@mesellings Can you give me one more approval for this PR? 😬

[mesellings]

Lgtm! 👍

[github-actions]

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