Adjust "account not in good standing" display thresholds

[002love]

Resolves #12533

This PR implements logic to hide the "bad standing" warning for minor infractions, as discussed in the issue

Key changes:

• warning is hidden for regular users if recent silences are <24h and inactive
• moderators still see the warning if any history exists (preserving visibility for staff)
• threshold of 3+ infringements triggers the warning regardless of length

Includes PHPUnit tests covering all logic branches

[LiquidPL]

this is already pretty good, there's just one thing to change

[002love]

Thanks for the feedback, applied all requested changes:

• renamed hasBadStanding to inBadStanding in the model and moved the moderator logic to the UserTransformer
• refactored isAfter() to isFuture()
• cleaned up config_set calls in unit tests

[LiquidPL]

LGTM