fix: task search returns assignedTo as object

src/task/task.service.ts

@@ -255,12 +255,14 @@ export async function searchTasks(params: PageQueryParams, tenantId: string) {
           },
         },
         assignedTo: {
-          $let: {
-            vars: { assignedTo: { $arrayElemAt: ["$assignedTo", 0] } },
+          $map: {
+            input: "$assignedTo",
+            as: "user",
             in: {
-              _id: "$$assignedTo._id",
-              pid: "$$assignedTo.pid",
-              name: "$$assignedTo.name",
+              _id: "$$user._id",
+              pid: "$$user.pid",
+              name: "$$user.name",
+              avatar: "$$user.avatar",
             },
           },
         },