How is it possible that the Safe UI is able to simulate a call to
execTransaction via Tenderly before collecting the signatures?
See this simulation, it succeeds even tho it only contains a single signature. It's a 2-of-4 setup, so it should fail with
GS020 for not having enough signatures.
I thought Tenderly executes transactions against the real contracts, but seems like some of my assumptions are wrong about the way Tenderly and/or Gnosis Safe works.