feat(nocodb): revise cache getList response

packages/nocodb/src/lib/cache/CacheMgr.ts

@@ -4,7 +4,13 @@ export default abstract class CacheMgr {
   public abstract del(key: string): Promise<any>;
   public abstract getAll(pattern: string): Promise<any[]>;
   public abstract delAll(scope: string, pattern: string): Promise<any[]>;
-  public abstract getList(scope: string, list: string[]): Promise<any[]>;
+  public abstract getList(
+    scope: string,
+    list: string[]
+  ): Promise<{
+    list: any[];
+    isEmptyList: boolean;
+  }>;
   public abstract setList(
     scope: string,
     subListKeys: string[],

packages/nocodb/src/lib/cache/NocoCache.ts

@@ -56,8 +56,15 @@ export default class NocoCache {
   public static async getList(
     scope: string,
     subKeys: string[]
-  ): Promise<any[]> {
-    if (this.cacheDisabled) return Promise.resolve([]);
+  ): Promise<{
+    list: any[];
+    isEmptyList: boolean;
+  }> {
+    if (this.cacheDisabled)
+      return Promise.resolve({
+        list: [],
+        isEmptyList: true,
+      });
     return this.client.getList(scope, subKeys);
   }