fix(interactive): fix the bug by passing empty STORE_COUNT setting in Groot charts (#4406)

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## What do these changes do?

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The missing value for `STORE_COUNT` in configmap.yaml
(https://github.com/alibaba/GraphScope/blob/main/charts/graphscope-store/templates/configmap.yaml#L126)
caused the compiler to overlook multiple stores in the configuration.
Consequently, the compiler might incorrectly assume the system is
non-distributed, potentially omitting essential repartition operations
(if worker_num is also set to 1) in the physical plan. This PR addresses
the issue by properly setting the value of `STORE_COUNT`.

## Related issue number

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change? -->

Fixes #4402

Author: BingqingLyu

charts/graphscope-store/templates/frontend/statefulset.yaml

@@ -97,6 +97,8 @@ spec:
           env:
             - name: ROLE
               value: "frontend"
+            - name: STORE_COUNT
+              value: "{{ .Values.store.replicaCount }}"
             - name: POD_IP
               valueFrom:
                 fieldRef:

charts/graphscope-store/templates/store/statefulset-backup.yaml

@@ -101,6 +101,8 @@ spec:
           env:
             - name: ROLE
               value: "store"
+            - name: STORE_COUNT
+              value: "{{ .Values.store.replicaCount }}"
             - name: POD_IP
               valueFrom:
                 fieldRef:

charts/graphscope-store/templates/store/statefulset.yaml

@@ -97,6 +97,8 @@ spec:
           env:
             - name: ROLE
               value: "store"
+            - name: STORE_COUNT
+              value: "{{ .Values.store.replicaCount }}"
             - name: POD_IP
               valueFrom:
                 fieldRef: