fixed: duplicate name (#1202)

### What problem does this PR solve?

Duplicate method name.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

api/apps/dataset_api.py

     desc = request.args.get("desc", True)
     try:
         tenants = TenantService.get_joined_tenants_by_user_id(current_user.id)
-        kbs = KnowledgebaseService.get_by_tenant_ids(
+        kbs = KnowledgebaseService.get_by_tenant_ids_by_offset(
             [m["tenant_id"] for m in tenants], current_user.id, int(offset), int(count), orderby, desc)
         return construct_json_result(data=kbs, code=RetCode.DATA_ERROR, message=f"attempt to list datasets")
     except Exception as e:

api/db/services/knowledgebase_service.py

 
     @classmethod
     @DB.connection_context()
-    def get_by_tenant_ids(cls, joined_tenant_ids, user_id,
-                          offset, count, orderby, desc):
+    def get_by_tenant_ids_by_offset(cls, joined_tenant_ids, user_id, offset, count, orderby, desc):
         kbs = cls.model.select().where(
             ((cls.model.tenant_id.in_(joined_tenant_ids) & (cls.model.permission ==
                                                             TenantPermission.TEAM.value)) | (