fix(auth): fix sync authentication with async operations

[bellini666]

As described on #1251, when resolving an async operation with a sync auth, SynchronousOnlyOperation can be raised in case that function accesses the DB, which is most likely it will.

This is the fix I proposed here

Fix #1251

[bellini666]

Hi @vitalik , asking for your kind review 🙏

[yorickr]

Hello @vitalik, I understand you must get a lot of review requests. Just checking in, is there any way we would be able to help out?

[vitalik]

Thank you @bellini666