Per RFC O2: pre-commit dispatch let queued listeners (tag sync, shifts,
webhooks, mailables) enqueue with state that might never persist on
rollback. Move dispatch to after DB::transaction returns.
This is semantically critical for the new ApplyBindings two-transaction
pattern (RFC Q4): the inner transaction must commit before sibling
listeners observe the submission.
Refs: RFC-WS-6.md §5 (O2)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
