Fix subscription cross tenant issue (#16670)

As title

packages/twenty-server/src/engine/subscriptions/subscription.service.ts

@@ -0,0 +1,50 @@
+import { Injectable } from '@nestjs/common';
+
+import { SubscriptionChannel } from 'src/engine/subscriptions/enums/subscription-channel.enum';
+import { RedisClientService } from 'src/engine/core-modules/redis-client/redis-client.service';
+
+@Injectable()
+export class SubscriptionService {
+  constructor(private readonly redisClient: RedisClientService) {}
+
+  private getSubscriptionChannel({
+    channel,
+    workspaceId,
+  }: {
+    channel: SubscriptionChannel;
+    workspaceId: string;
+  }) {
+    return `${channel}:${workspaceId}`;
+  }
+
+  async subscribe({
+    channel,
+    workspaceId,
+  }: {
+    channel: SubscriptionChannel;
+    workspaceId: string;
+  }) {
+    const client = this.redisClient.getPubSubClient();
+
+    return client.asyncIterator(
+      this.getSubscriptionChannel({ channel, workspaceId }),
+    );
+  }
+
+  async publish<T>({
+    channel,
+    payload,
+    workspaceId,
+  }: {
+    channel: SubscriptionChannel;
+    payload: T;
+    workspaceId: string;
+  }): Promise<void> {
+    const client = this.redisClient.getPubSubClient();
+
+    await client.publish(
+      this.getSubscriptionChannel({ channel, workspaceId }),
+      payload,
+    );
+  }
+}