fix(helm): align Novu services Redis DB index to 2

All Novu services (API, Worker, WS, Embed) were using inconsistent
Redis DB index values, causing in-app notifications to fail delivery.
The Worker publishes notifications to Redis, but the WS service was
listening on a different DB index, preventing real-time notification
delivery to the frontend.

Changes:
- Updated api/deployment.yaml to use configurable REDIS_DB_INDEX with default "2"
- Updated worker/deployment.yaml to use configurable REDIS_DB_INDEX with default "2"
- Updated ws/deployment.yaml to use configurable REDIS_DB_INDEX with default "2"
- Updated extra/novu.yaml embed service to use REDIS_DB_INDEX "2"

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: dittops

infra/helm/bud/charts/novu/templates/api/deployment.yaml

@@ -110,7 +110,7 @@ spec:
             - name: REDIS_PORT
               value : "{{ include "novu.redis.port" . }}"
             - name: REDIS_DB_INDEX
-              value : "1"
+              value : {{ .Values.api.env.REDIS_DB_INDEX | default "2" | quote }}
             - name: REDIS_CACHE_SERVICE_HOST
               value : "{{ include "novu.redis.host" .}}"
             - name: REDIS_CACHE_SERVICE_PORT

infra/helm/bud/charts/novu/templates/worker/deployment.yaml

@@ -104,7 +104,7 @@ spec:
             - name: REDIS_PORT
               value : {{ include "novu.redis.port" . | quote }}
             - name: REDIS_DB_INDEX
-              value : "1"
+              value : {{ .Values.worker.env.REDIS_DB_INDEX | default "2" | quote }}
             - name: REDIS_CACHE_SERVICE_HOST
               value : {{ include "novu.redis.host" . | quote }}
             - name: REDIS_CACHE_SERVICE_PORT

infra/helm/bud/charts/novu/templates/ws/deployment.yaml

@@ -104,7 +104,7 @@ spec:
             - name: REDIS_PORT
               value : {{ include "novu.redis.port" . | quote }}
             - name: REDIS_DB_INDEX
-              value : "1"
+              value : {{ .Values.ws.env.REDIS_DB_INDEX | default "2" | quote }}
             - name: REDIS_PASSWORD
               valueFrom :
                 secretKeyRef:

infra/helm/bud/templates/extra/novu.yaml

@@ -41,7 +41,7 @@ spec:
           - name: REDIS_PORT
             value : "6379"
           - name: REDIS_DB_INDEX
-            value : "1"
+            value : "2"
           - name: REDIS_PASSWORD
             value : "{{ .Values.valkey.auth.password }}"
           - name: MONGO_URL