Add noqa to remove the need for post-processing in consumers

Author: blast-hardcheese

src/replit_river/codegen/server.py

@@ -305,6 +305,7 @@ def generate_river_module(
     chunks: list[str] = [
         dedent(
             f"""\
+        # ruff: noqa
         # Code generated by river.codegen. DO NOT EDIT.
         import datetime
         from typing import Any, Mapping, Tuple