Tone down log messages

[x80486]

Session is very chatty:

Dec 23 10:13:32 uplink network.loki.Session.desktop[470356]: {"level":30,"time":"2025-12-23T15:13:32.433Z","msg":"destroyExpiredMessages: Loading messages..."}
Dec 23 10:13:32 uplink network.loki.Session.desktop[470356]: {"level":30,"time":"2025-12-23T15:13:32.436Z","msg":"destroyExpiredMessages: convosToRefresh: []"}
Dec 23 10:13:32 uplink network.loki.Session.desktop[470356]: {"level":30,"time":"2025-12-23T15:13:32.436Z","msg":"destroyExpiredMessages: complete"}
Dec 23 10:13:32 uplink network.loki.Session.desktop[470356]: {"level":30,"time":"2025-12-23T15:13:32.438Z","msg":"message with hash:<REDACTED> expires in 111666557ms, or 111666s, or 31h"}
Dec 23 10:13:32 uplink network.loki.Session.desktop[470356]: {"level":30,"time":"2025-12-23T15:13:32.443Z","msg":"Loading 2 messages took 3ms to load for convo (...<REDACTED>)."}
Dec 23 10:13:33 uplink network.loki.Session.desktop[470356]: {"level":30,"time":"2025-12-23T15:13:33.123Z","msg":"destroyExpiredMessages: Loading messages..."}
Dec 23 10:13:33 uplink network.loki.Session.desktop[470356]: {"level":30,"time":"2025-12-23T15:13:33.126Z","msg":"destroyExpiredMessages: convosToRefresh: []"}
Dec 23 10:13:33 uplink network.loki.Session.desktop[470356]: {"level":30,"time":"2025-12-23T15:13:33.126Z","msg":"destroyExpiredMessages: complete"}
Dec 23 10:13:33 uplink network.loki.Session.desktop[470356]: {"level":30,"time":"2025-12-23T15:13:33.130Z","msg":"message with hash:<REDACTED> expires in 111665865ms, or 111665s, or 31h"}
Dec 23 10:13:33 uplink network.loki.Session.desktop[470356]: {"level":30,"time":"2025-12-23T15:13:33.137Z","msg":"Loading 2 messages took 4ms to load for convo (...<REDACTED>)."}
Dec 23 10:14:00 uplink network.loki.Session.desktop[470356]: {"level":30,"time":"2025-12-23T15:14:00.464Z","msg":"[updater] about to fetchReleaseFromFSAndUpdateMain"}
Dec 23 10:14:00 uplink network.loki.Session.desktop[470356]: {"level":30,"time":"2025-12-23T15:14:00.464Z","msg":"[updater] fetched release from fs 12 minutes ago, skipping until that's at least 30"}

I think this should be toned down, because at runtime users are only interested in WARNINGS or ERRORS.

If these are needed, probably there is a way to enable them with an environment variable or something similar.