Updated reconnect-backoff comments in rpc-client.ts and connection-health.ts to reflect the actual ~6m total (not ~2m). Made valueFromMs() snap non-preset ms to the closest finite preset so the picker's selected radio agrees with the row sublabel.
Rebased onto current main to resolve conflicts; only the 3 Fixer-summary files.
Co-authored-by: buf0-bot <buf0-bot@users.noreply.github.com>