fix: Prover job ordering (#3738)

## What ❔

Revert job ordering by priority

## Why ❔

It produces proof delay

## Is this a breaking change?
- [ ] Yes
- [x] No

## Operational changes
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## Checklist

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- [ ] PR title corresponds to the body of PR (we generate changelog
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- [ ] Tests for the changes have been added / updated.
- [ ] Documentation comments have been added / updated.
- [ ] Code has been formatted via `zkstack dev fmt` and `zkstack dev
lint`.

Author: Artemka374