pruneEventDict and signEvent's `prune` flag should go away entirely, replaced by

PersistentEventFactory.createFromRawEvent(event, roomVersion).redactedEvent. Blocked on migrating the 28 remaining signEvent(..., prune=true) call sites in packages/core/src/events/*.spec.ts. m.room.create.spec.ts already signs the same fixture both ways and gets an identical signature, so the migration should preserve every hardcoded signature fixture rather than require regenerating them — a failure there would be a real divergence between the two redaction implementations.

https://github.com/RocketChat/homeserver/blob/3539adcd7ea7b98481889bcd1ebb73223bf64c21/packages/core/src/utils/pruneEventDict.spec.ts#L41-L43

This issue was generated by todo-issue based on a TODO comment in 3539adcd7ea7b98481889bcd1ebb73223bf64c21. It's been assigned to @sampaiodiego because they committed the code.