fix(fetch): handle malformed input without crashing (#3515)

fix(fetch): handle malformed input without crashing

Changes `raise_exceptions=True` to `raise_exceptions=False` in the fetch server's `Server.run()` call, preventing the server from crashing on malformed JSON-RPC input. This aligns with the SDK's intended default behavior and is consistent with other reference servers.

Fixes #3359

Author: anshul-garg27

src/fetch/src/mcp_server_fetch/server.py

@@ -285,4 +285,4 @@ async def get_prompt(name: str, arguments: dict | None) -> GetPromptResult:
 
     options = server.create_initialization_options()
     async with stdio_server() as (read_stream, write_stream):
-        await server.run(read_stream, write_stream, options, raise_exceptions=True)
+        await server.run(read_stream, write_stream, options, raise_exceptions=False)