fix: assign instance ID to aggregate ID when converting from v1 to v2 feature (#7505)

* fix: assign instance ID to aggregate ID when converting from v1 to v2 feature

This change fixes a mismatch between v1 and v2 aggregate IDs for instance feature events.
The old v1 used a random aggregate ID, while v2 uses the instance ID as aggregate ID.
The adapter was not correctly mapping, which resulted in the projections.instance_features table being filled with wrong instance IDs.

Closes #7501

* fix unit test

internal/repository/feature/feature.go

@@ -22,6 +22,10 @@ func DefaultLoginInstanceEventToV2(e *SetEvent[Boolean]) *feature_v2.SetEvent[bo
 		BaseEvent: e.BaseEvent,
 		Value:     e.Value.Boolean,
 	}
+
+	// v1 used a random aggregate ID.
+	// v2 uses the instance ID as aggregate ID.
+	v2e.BaseEvent.Agg.ID = e.Agg.InstanceID
 	v2e.BaseEvent.EventType = feature_v2.InstanceLoginDefaultOrgEventType
 	return v2e
 }