Add 50k/100k/250k-element size cases (~195 KB–954 KB packets) to the DS and
hub size axes so the stress suite exercises UDPSClient multi-fragment
reassembly under load, and lift the now-outdated 64 KB validation cap to the
1 MiB deliverable cap (UDPS_CLIENT_MAX_PACKET_BYTES). Slowed producers keep
bandwidth realistic.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Martino Ferrari