ref(replays): fix timestamp for errors tab (#69418)
Fixes an edge case where we show `00:00.000` where everything else is
`xx:xx` on the errors tab:
<img width="830" alt="SCR-20240419-kouq"
src="https://github.com/getsentry/sentry/assets/56095982/b52394e1-ee4b-481d-9914-d266d0288247">
After:
<img width="586" alt="SCR-20240422-iijq"
src="https://github.com/getsentry/sentry/assets/56095982/a122bc96-bde0-4d19-858a-1b4ab8309070">