Fix: routing cannot route DNS over QUIC with IP

[AkinoKaede]

This Pull Request is inspired by #1144.
I think routing may cannot route DNS over QUIC with IP Address.
Because AdGuard DNS is the only Public DNS that supported DNS over QUIC, and it not supported SNI with IP Address, so I didn't test it.

[codecov-commenter]

Codecov Report

Merging #1226 (d81f40e) into master (c91f98c) will decrease coverage by 0.12%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1226      +/-   ##
==========================================
- Coverage   44.87%   44.75%   -0.13%     
==========================================
  Files         485      484       -1     
  Lines       29505    29479      -26     
==========================================
- Hits        13241    13193      -48     
- Misses      14870    14884      +14     
- Partials     1394     1402       +8     

Impacted Files	Coverage Δ
app/dns/nameserver_quic.go	73.95% <100.00%> (ø)
transport/internet/udp/dispatcher.go	64.76% <0.00%> (-12.39%)	⬇️
common/buf/reader.go	82.35% <0.00%> (-5.89%)	⬇️
transport/internet/udp/hub.go	73.61% <0.00%> (-4.17%)	⬇️
proxy/freedom/freedom.go	45.00% <0.00%> (-4.00%)	⬇️
transport/internet/system_listener.go	50.00% <0.00%> (-4.00%)	⬇️
transport/internet/system_dialer.go	46.83% <0.00%> (-2.54%)	⬇️
transport/internet/kcp/listener.go	81.18% <0.00%> (-1.99%)	⬇️
proxy/vmess/outbound/outbound.go	66.36% <0.00%> (-0.91%)	⬇️
transport/internet/sockopt_darwin.go

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