make task creation and submission logs DEBUG

[zzstoatzz]

closes #15627

[cicdw]

Yes

[desertaxle]

Do we want to make task run creation logs debug too?

[codspeed-hq]

CodSpeed Performance Report

Merging #15631 will not alter performance

_{Comparing declutter-task-submission-logs (1823704) with main (b1c9d20)}

Summary

✅ 3 untouched benchmarks

[zzstoatzz]

Do we want to make task run creation logs debug too?

@desertaxle I intentionally did not do that here, because then there would be no indication that a task started in the logs, you would only ever see Finished in state Completed(), which I could be convinced is fine

EDIT: we will go ahead and make the creation log DEBUG as well