Re: [quicwg/base-drafts] Change max_packet_size to max_datagram_size (#3471)

[Nick Banks <[e-mail]>]

I agree. This seems like a good change, though I had already interpreted this value as "max UDP payload size" in the msquic code. I went back and looked at the text, and it's not 100% clear whether it was supposed to be for a QUIC packet or UDP datagram. It does say 'packet", not "datagram", but that word has been used interchangeably in the past...
```
max_packet_size (0x0003):
The maximum packet size parameter is an integer value that limits the size
of packets that the endpoint is willing to receive. This indicates that packets
larger than this limit will be dropped. The default for this parameter is the
maximum permitted UDP payload of 65527. Values below 1200 are invalid.
This limit only applies to protected packets (Section 12.1).
```
You might argue that it was always supposed to be UDP datagram payload length and call this editorial to clarify that, but calling it design is probably best.

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