Redact project bot name in UI

What does this MR do and why?

Describe in detail what your merge request does and why.

Note: needs rebase after !81843 (merged) and !81472 (merged)

If the current user cannot read the project or group that the bot belongs to, redact bot name in the UI.

Before:

Not signed in:

Signed in as a group member:

After:

Not signed in:

Signed in a a group member:

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