Wasteful datagram use by the server in the handshake

[flub]

During the handshake the first time the server sends something to the client you can see these packets and datagrams being built:

TRACE server:send{space=Initial pn=0}: iroh_quinn_proto::connection: ACK ArrayRangeSet([0..1]), Delay = 0us
TRACE server:send{space=Initial pn=0}: iroh_quinn_proto::connection: CRYPTO: off 0 len 90
TRACE server:send{space=Handshake pn=0}: iroh_quinn_proto::connection: CRYPTO: off 0 len 663
TRACE server:send{space=Handshake pn=0}: iroh_quinn_proto::connection::packet_builder: PADDING * 346
TRACE server: iroh_quinn_proto::connection: sending 1200 bytes in 1 datagrams
TRACE server:send{space=Data pn=0}: iroh_quinn_proto::connection: OBSERVED_ADDRESS observed=ObservedAddr { seq_no: 0, ip: ::1, port: 44433 }
TRACE server:send{space=Data pn=0}: iroh_quinn_proto::connection: NEW_CONNECTION_ID sequence=1 id=7e34985d9f8a4da4
TRACE server:send{space=Data pn=0}: iroh_quinn_proto::connection: NEW_CONNECTION_ID sequence=2 id=5a7523300fbf135d
TRACE server:send{space=Data pn=0}: iroh_quinn_proto::connection: NEW_CONNECTION_ID sequence=3 id=2601e2cd09fdaff3
TRACE server:send{space=Data pn=0}: iroh_quinn_proto::connection: NEW_CONNECTION_ID sequence=4 id=df715cd69fa099b8
TRACE server: iroh_quinn_proto::connection: sending 161 bytes in 1 datagrams

You can see that the first datagram is padded with 346 bytes and sent. But then immediately a 2nd datagram is built containing only 161 bytes for packet 0 in the data space. Packet 0 from the data space should have been coalesced into the first datagram since the handshake packet has a long header.