perf: query data AS OF SYSTEM TIME (#5231)

Queries the data in the storage layser at the timestamp when the call hit the API layer

internal/api/oidc/key.go

@@ -187,6 +187,7 @@ func (o *OPStorage) getMaxKeySequence(ctx context.Context) (uint64, error) {
 	return o.eventstore.LatestSequence(ctx,
 		eventstore.NewSearchQueryBuilder(eventstore.ColumnsMaxSequence).
 			ResourceOwner(authz.GetInstance(ctx).InstanceID()).
+			AllowTimeTravel().
 			AddQuery().
 			AggregateTypes(keypair.AggregateType, instance.AggregateType).
 			Builder(),