Tried to activate scope outside of logging context in EndToEndKeyWorkerStore

[DMRobertson]

While looking through the most frequent sentry reports, I spotted that we have seen only one scope outside of logging context error in the last 30 days:

https://sentry.matrix.org/sentry/synapse-matrixorg/issues/15805/events/5222619/

Regrettably, synapse logs have already rotated out. But the transaction invalidate_cache_and_stream

synapse/synapse/storage/databases/main/cache.py

Lines 216 to 236 in c486fa5

	async def invalidate_cache_and_stream(
	self, cache_name: str, keys: Tuple[Any, ...]
	) -> None:
	"""Invalidates the cache and adds it to the cache stream so slaves
	will know to invalidate their caches.
	This should only be used to invalidate caches where slaves won't
	otherwise know from other replication streams that the cache should
	be invalidated.
	"""
	cache_func = getattr(self, cache_name, None)
	if not cache_func:
	return
	cache_func.invalidate(keys)
	await self.db_pool.runInteraction(
	"invalidate_cache_and_stream",
	self._send_invalidation_to_replication,
	cache_func.__name__,
	keys,
	)

is called in two places: one inside claim_e2e_one_time_keys

synapse/synapse/storage/databases/main/end_to_end_keys.py

Lines 1095 to 1097 in 2cc5ea9

	await self.invalidate_cache_and_stream(
	"get_e2e_unused_fallback_key_types", (user_id, device_id)
	)

and another inside set_e2e_fallback_keys:

synapse/synapse/storage/databases/main/end_to_end_keys.py

Lines 573 to 575 in 2cc5ea9

	await self.invalidate_cache_and_stream(
	"get_e2e_unused_fallback_key_types", (user_id, device_id)
	)