loadEnvFile() took everything after the first '=', so 'KEY=value # note' stored
the comment text as part of the value. The shipped .env/.env.example do exactly
that for QUOTA_STORE_DRIVER, so every install ran with
QUOTA_STORE_DRIVER='sqlite # sqlite | redis'.
Consumers compare with '===' (storeFactory.ts), so a user following the
annotation in .env.example and writing 'QUOTA_STORE_DRIVER=redis # ...' got
driver !== 'redis', fell through to SQLite, and saw no warning — the existing
'no Redis URL configured' warning is inside the redis branch and never fires.
parseEnvValue() adopts dotenv semantics: quoted values verbatim (a '#' inside
quotes is data), unquoted values cut at the first whitespace-preceded '#', so
'pass#word' survives. .env.example moves the annotation to its own line.
Closes#10100
