Sync transaction gets seemingly spontaneously aborted, bricking sync.

It tries to abort again and fails, logging `Could not abort sync transaction, the sync response was probably only partially written and may have put storage in a inconsistent state.` Then it logs the real error: `(name: AbortError) The transaction was aborted, so the request cannot be fulfilled`. We should not try to abort again in any case when the browser aborts for their own reasons (like suspending the machine? see below) but not sure when we should retry syncing again ...

Kegan possibly to have run into this when his mac was suspending.

Also, Matthew has run into this as well, also on Mac, but both Kegan and Matthew had this when trying hydrogen with dendite ... which is really weird?