In T325087#8465636, @Tgr noted that:
This will display as "Your primary mentor, FooBar, is currently away until <right now>." which seems confusing. The same is true for blocks as well.
We should address this by removing the end date for (b)locked users (it's impossible when the block will be lifted, if it will be at all). The phrasing might be "is unavailable" rather than "is away", as previously discussed for protected talk pages issue.
Acceptance criteria
- When a newcomer's mentor is blocked or locked, they see "Mentor XYZ is temporarily unavailable" while asking a question (without any mention of an end date).