Allow relaying of recovery transactions

[iamacook]

Description

We only allow relaying of Safe transactions. This means that they need to originate from a Safe. A recovery transaction is executed via a module (a Delay Modifier).

We should allow for recovery transactions to be relayed. As a recoverer is likely a non-crypto native, being able to relay recovery transactions would simplify the recovery flow.

Requirements

• Allow transactions that originate from modules (Delay Modifiers in particular)
• Add test coverage

Additional information

No response