Refactor: move mcp connection utilities to common (#11304)

### What problem does this PR solve?

As title

### Type of change

- [x] Refactoring

---------

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

api/apps/mcp_server_app.py

@@ -25,7 +25,7 @@ from common.misc_utils import get_uuid
 from api.utils.api_utils import get_data_error_result, get_json_result, server_error_response, validate_request, \
     get_mcp_tools
 from api.utils.web_utils import get_float, safe_json_parse
-from rag.utils.mcp_tool_call_conn import MCPToolCallSession, close_multiple_mcp_toolcall_sessions
+from common.mcp_tool_call_conn import MCPToolCallSession, close_multiple_mcp_toolcall_sessions
 
 
 @manager.route("/list", methods=["POST"])  # noqa: F821

api/apps/sdk/agents.py

@@ -41,12 +41,12 @@ def list_agents(tenant_id):
             return get_error_data_result("The agent doesn't exist.")
     page_number = int(request.args.get("page", 1))
     items_per_page = int(request.args.get("page_size", 30))
-    orderby = request.args.get("orderby", "update_time")
+    order_by = request.args.get("orderby", "update_time")
     if request.args.get("desc") == "False" or request.args.get("desc") == "false":
         desc = False
     else:
         desc = True
-    canvas = UserCanvasService.get_list(tenant_id, page_number, items_per_page, orderby, desc, id, title)
+    canvas = UserCanvasService.get_list(tenant_id, page_number, items_per_page, order_by, desc, id, title)
     return get_result(data=canvas)