Generate single-line model_config in surface types (#3820)

Author: Kludex

scripts/gen_surface_types.py

@@ -250,7 +250,7 @@ def patch(match: re.Match[str]) -> str:
         return match.group(0).replace('extra="ignore"', 'extra="allow"')
 
     source = re.sub(
-        r'^class (\w+)\(WireModel\):\n(?: {4}.*\n|\n)*? {4}model_config = ConfigDict\(\n {8}extra="ignore",\n {4}\)\n',
+        r'^class (\w+)\(WireModel\):\n(?: {4}.*\n|\n)*? {4}model_config = ConfigDict\(extra="ignore"\)\n',
         patch,
         source,
         flags=re.MULTILINE,
@@ -310,6 +310,9 @@ def build(entry: dict[str, str]) -> str:
     # them to full URLs so they resolve from the rendered API docs and pass the
     # strict mkdocs link validation.
     source = source.replace("](/", "](https://modelcontextprotocol.io/")
+    source = re.sub(
+        r'model_config = ConfigDict\(\n\s+(extra="ignore"),\n\s+\)', r"model_config = ConfigDict(\1)", source
+    )
     source = allow_open_class_extras(source, OPEN_CLASSES[version])
     if epilogue := EPILOGUES.get(version, ""):
         # Resolve aliases before rebuilding models with forward references.