Updates the baggage implementation to comply with
https://www.w3.org/TR/baggage/#limits:
- Changed maxMembers from 180 to 64 (the W3C compliance requirement)
> The resulting baggage-string contains 64 list-members or less.
- Removed maxBytesPerMembers (4096) - this per-member limit was not part
of the W3C spec
- Added limit checking in extractMultiBaggage for multiple baggage
headers:
- Checks combined byte size across all headers (max 8192 bytes)
- Checks combined member count across all headers (max 64 members)
This uses non-deterministic truncation when handling baggage limits.
Sam Xie