Do not return the invite code when listing role assignments and set display name defaults

[rdimitrov]

Summary

The following PR addresses the feedback from #3689.

There'll be a follow up with some of the other items from that list.

Change Type

Mark the type of change your PR introduces:

• Bug fix (resolves an issue without affecting existing features)
• Feature (adds new functionality without breaking changes)
• Breaking change (may impact existing functionalities or require documentation updates)
• Documentation (updates or additions to documentation)
• Refactoring or test improvements (no bug fixes or new functionality)

Testing

Outline how the changes were tested, including steps to reproduce and any relevant configurations.
Attach screenshots if helpful.

Review Checklist:

• Reviewed my own code for quality and clarity.
• Added comments to complex or tricky code sections.
• Updated any affected documentation.
• Included tests that validate the fix or feature.
• Checked that related changes are merged.

[coveralls]

coverage: 52.432%. remained the same
when pulling 59bdfd9 on feedback
into 98373ad on main.

[coveralls]

coverage: 52.441% (+0.009%) from 52.432%
when pulling 51f143d on feedback
into 98373ad on main.

[coveralls]

coverage: 52.422% (-0.01%) from 52.432%
when pulling 84a6920 on feedback
into 98373ad on main.

[coveralls]

coverage: 52.424% (-0.008%) from 52.432%
when pulling 0ea4ac5 on feedback
into 98373ad on main.

[coveralls]

coverage: 52.417% (-0.02%) from 52.432%
when pulling 742bab7 on feedback
into 98373ad on main.

[coveralls]

coverage: 52.421% (-0.01%) from 52.432%
when pulling 84e4e7b on feedback
into 98373ad on main.

[coveralls]

coverage: 52.412% (-0.02%) from 52.432%
when pulling cef1030 on feedback
into 98373ad on main.