Persist produced execution payload envelopes

[nflaig]

post-gloas we need to also at least persist payload envelope
(not part of this PR through)

Originally posted by @twoeths in #9595 (comment)

[nflaig]

this is similar to persistProducedBlocks which persists our produced blocks on disk for later debugging if needed, we should add the same for execution payload envelopes, potentially behind a separate feature flag