Refact: switch from google-generativeai to google-genai (#13140)

### What problem does this PR solve?

Refact: switch from oogle-generativeai to google-genai  #13132
Refact: commnet out unused pywencai.

### Type of change

- [x] Refactoring

agent/component/agent_with_tools.py

@@ -76,8 +76,6 @@ class AgentParam(LLMParam, ToolParamBase):
         self.mcp = []
         self.max_rounds = 5
         self.description = ""
-        self.custom_header = {}
-
 
 
 class Agent(LLM, ToolBase):
@@ -107,8 +105,7 @@ class Agent(LLM, ToolBase):
 
         for mcp in self._param.mcp:
             _, mcp_server = MCPServerService.get_by_id(mcp["mcp_id"])
-            custom_header = self._param.custom_header
-            tool_call_session = MCPToolCallSession(mcp_server, mcp_server.variables, custom_header)
+            tool_call_session = MCPToolCallSession(mcp_server, mcp_server.variables)
             for tnm, meta in mcp["tools"].items():
                 self.tool_meta.append(mcp_tool_metadata_to_openai_tool(meta))
                 self.tools[tnm] = tool_call_session

agent/tools/wencai.py

@@ -18,7 +18,7 @@ import os
 import time
 from abc import ABC
 import pandas as pd
-import pywencai
+# import pywencai
 
 from agent.tools.base import ToolParamBase, ToolMeta, ToolBase
 from common.connection_utils import timeout
@@ -84,7 +84,8 @@ class WenCai(ToolBase, ABC):
 
             try:
                 wencai_res = []
-                res = pywencai.get(query=kwargs["query"], query_type=self._param.query_type, perpage=self._param.top_n)
+                # res = pywencai.get(query=kwargs["query"], query_type=self._param.query_type, perpage=self._param.top_n)
+                res = []
                 if self.check_if_canceled("WenCai processing"):
                     return