* Add InvalidChunkExtension to treq_asgi.py and fast parser support
- Add InvalidChunkExtension import and exception mapping for proper test
coverage of bare CR rejection in chunk extensions per RFC 9112 7.1.1
- Add fast parser (H1CProtocol) support to treq_asgi.py and the ASGI
invalid request tests
- Fast parser now receives limit configuration (limit_request_line,
limit_request_fields, limit_request_field_size)
- Handle gunicorn_h1c's multiple ParseError classes from different modules
- Skip tests where fast parser has different validation than Python parser
* Handle gunicorn_h1c limit exceptions in ASGI protocol
Add handling for gunicorn_h1c.LimitRequestLine and
gunicorn_h1c.LimitRequestHeaders exceptions, matching the behavior
of the Python parser exceptions with appropriate HTTP status codes:
- LimitRequestLine: 414 URI Too Long
- LimitRequestHeaders: 431 Request Header Fields Too Large
* Refactor data_received to fix too-many-return-statements lint
Handle chunked encoding edge case where connection closes before
final CRLF after zero-chunk. Skip WSGI-specific tests (casefold,
underscore headers) that don't apply to ASGI.
