Fix background update to handle invalid events (#17641)

Follow-up to #17634, #17631
and #17632 to fix-up
#17512

changelog.d/17641.misc

@@ -0,0 +1 @@
+Pre-populate room data used in experimental [MSC3575](https://github.com/matrix-org/matrix-spec-proposals/pull/3575) Sliding Sync `/sync` endpoint for quick filtering/sorting.

synapse/storage/databases/main/events_bg_updates.py

@@ -41,7 +41,10 @@
     SlidingSyncMembershipSnapshotSharedInsertValues,
     SlidingSyncStateInsertValues,
 )
-from synapse.storage.databases.main.events_worker import DatabaseCorruptionError
+from synapse.storage.databases.main.events_worker import (
+    DatabaseCorruptionError,
+    InvalidEventError,
+)
 from synapse.storage.databases.main.state_deltas import StateDeltasStore
 from synapse.storage.databases.main.stream import StreamWorkerStore
 from synapse.storage.types import Cursor
@@ -2089,7 +2092,7 @@ def _find_previous_membership_txn(
                         fetched_events = await self.get_events(
                             current_state_ids_map.values()
                         )
-                    except DatabaseCorruptionError as e:
+                    except (DatabaseCorruptionError, InvalidEventError) as e:
                         logger.warning(
                             "Failed to fetch state for room '%s' due to corrupted events. Ignoring. Error: %s",
                             room_id,
@@ -2197,7 +2200,7 @@ def _find_previous_membership_txn(
 
                 try:
                     fetched_events = await self.get_events(state_ids_map.values())
-                except DatabaseCorruptionError as e:
+                except (DatabaseCorruptionError, InvalidEventError) as e:
                     logger.warning(
                         "Failed to fetch state for room '%s' due to corrupted events. Ignoring. Error: %s",
                         room_id,