validation error always reported as signature failure

[drortirosh]

in _doUserOpValidation, any validation failure (revert reason) is ignored, and reported back as SIG_VALIDATION_FAILED - which is wrong.
SIG_VALIDATION_FAILED should only be returned if the signature is syntactically correct (e.g. the right length, right sub-fields (if any), etc), but resolves to the wrong signer.
the called method should return the SIG_VALIDATION_FAILED as part of the returned validation data
Instead, the original revert should be thrown (or wrapped with an outer revert, if needed)

[jaypaik]

Acknowledged, thanks.