fix: change function name python to run_python (#1901)

lua/avante/llm_tools/init.lua

@@ -630,7 +630,7 @@ M._tools = {
     },
   },
   {
-    name = "python",
+    name = "run_python",
     description = "Run python code in current project scope. Can't use it to read files or modify files.",
     param = {
       type = "table",
@@ -1097,6 +1097,9 @@ M._tools = {
   },
 }
 
+--- compatibility alias for old calls & tests
+M.run_python = M.python
+
 ---@param tools AvanteLLMTool[]
 ---@param tool_use AvanteLLMToolUse
 ---@param on_log? fun(tool_id: string, tool_name: string, log: string, state: AvanteLLMToolUseState): nil