Port of Rosmi720/XC_VM@b44abddf. The rogue-connection sweep assumed
ConnectionTracker::getConnections() always returned a MySQL map grouped by
user id and iterated it with a flat double-loop. In Redis mode it returns a
[keys, data] pair, so the inner loop hit string keys and threw a TypeError,
aborting the cron.
Parse the result defensively via a small recursive helper (collectUuidRows)
that flattens any of the shapes — the Redis [keys, data] pair, the MySQL
user-id map and a single connection row — to the rows carrying a uuid, then
filter to the current stream. Both helpers are pure and unit-tested.
Adapted to this tree: the ar.ini/en.ini label tweaks target keys not present
here, so only the cron fix was ported; the added guards were split into
covered helpers to keep loadCron within the complexity ceiling.
