fix(anomaly detection): turn processing back on for dynamic rules (#94652)

Since we had to roll back dual processing for dynamic alerts, re-enable
processing through subscription processor.

Author: mifu67

src/sentry/incidents/subscription_processor.py

@@ -402,7 +402,6 @@ def process_update(self, subscription_update: QuerySubscriptionUpdate) -> None:
         if (
             has_anomaly_detection
             and self.alert_rule.detection_type == AlertRuleDetectionType.DYNAMIC
-            and not has_metric_alert_processing
         ):
             with metrics.timer(
                 "incidents.subscription_processor.process_update.get_anomaly_data_from_seer_legacy"