Dangerous try / catch all in lodestar-db

[dapplion]

Lodestar-db has a try / catch that swallows all errors, without doing any triage first. Is this expected? Can we define what types of errors do we want to ignore and catch only those?

lodestar/packages/lodestar-db/src/abstractRepository.ts

Lines 54 to 56 in a5973ea

	} catch (e) {
	return null;
	}

[wemeetagain]

We probably can remove the try/catch entirely.
I think it was originally there to convert "not-found" errors into null. Thats done within the leveldb IDatabaseController tho.