* fix(cron): guard against year-rollback in croner nextRun
Croner can return a past-year timestamp for some timezone/date
combinations (e.g. Asia/Shanghai). When nextRun returns a value at or
before nowMs, retry from the next whole second and, if still stale,
from midnight-tomorrow UTC before giving up.
Closes#30351
* googlechat: guard API calls with SSRF-safe fetch
* test: fix hoisted plugin context mock setup
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Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>