Fix dag (un)pausing won't work on environment where dag files are missing

[boushphong]

closes: #38834

#38265 added bulk pause and resume of DAGs. However, this PR seems to reuse the cli util method that collects DAGs from the default dag folder but not from the metadata DB. Hence, this would cause the unpause command to fail on environments where the dag folder is missing.

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[boushphong]

@ephraimbuddy Could you take a look? 🙇

[shahar1]

LGTM overall, but I'd be happy if @ephraimbuddy could double-check.
I reused this logic from the backfilling method, does it make sense to have it also there?

[boushphong]

LGTM overall, but I'd be happy if @ephraimbuddy could double-check. I reused this logic from the backfilling method, does it make sense to have it also there?

@shahar1 I would say so.

Maybe you could submit a Pull Request for the backfilling part? 🚀
I would love to look into it though. Which part of the code should I look into?

[shahar1]

LGTM overall, but I'd be happy if @ephraimbuddy could double-check. I reused this logic from the backfilling method, does it make sense to have it also there?

@shahar1 I would say so.

Maybe you could submit a Pull Request for the backfilling part? 🚀 I would love to look into it though. Which part of the code should I look into?

dag_backfill method, around line 157 :)
I'll try to work it out later