Fix for review suggestions https://github.com/ome/omero-py/pull/199

[Tom-TBT]

• checks that a single group is provided before filtering groups on pre-existing group membership
• sets group as default even if the user was already part of the group
• extended --as-default option description to reflect these changes

[Copilot]

Pull request overview

This pull request addresses review feedback from PR ome#199 by improving the joingroup command's handling of the --as-default flag. The main change ensures that a group can be set as the default group even if the user is already a member of that group.

Changes:

• Validates that only a single group is provided before filtering for group membership
• Stores the target group before filtering so it can be set as default even if already a member
• Updates help text to clarify the --as-default behavior

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Copilot encountered an error and was unable to review this pull request. You can try again by re-requesting a review.