community[fix] : Pass API_KEY as argument (#30272)

PR Title:
community: Fix Pass API_KEY as argument

PR Message:
Description:
This PR fixes validation error "Value error, Did not find
tavily_api_key, please add an environment variable `TAVILY_API_KEY`
which contains it, or pass `tavily_api_key` as a named parameter."

Dependencies:
No new dependencies introduced.

---------

Co-authored-by: pulvedu <dustin@tavily.com>
Co-authored-by: Chester Curme <chester.curme@gmail.com>

libs/community/langchain_community/tools/tavily_search/tool.py

@@ -1,6 +1,6 @@
 """Tool for the Tavily search API."""
 
-from typing import Dict, List, Literal, Optional, Tuple, Type, Union
+from typing import Any, Dict, List, Literal, Optional, Tuple, Type, Union
 
 from langchain_core.callbacks import (
     AsyncCallbackManagerForToolRun,
@@ -149,6 +149,15 @@ class TavilySearchResults(BaseTool):  # type: ignore[override, override]
     api_wrapper: TavilySearchAPIWrapper = Field(default_factory=TavilySearchAPIWrapper)  # type: ignore[arg-type]
     response_format: Literal["content_and_artifact"] = "content_and_artifact"
 
+    def __init__(self, **kwargs: Any) -> None:
+        # Create api_wrapper with tavily_api_key if provided
+        if "tavily_api_key" in kwargs:
+            kwargs["api_wrapper"] = TavilySearchAPIWrapper(
+                tavily_api_key=kwargs["tavily_api_key"]
+            )
+
+        super().__init__(**kwargs)
+
     def _run(
         self,
         query: str,