Proxy UDP fallback for hostname ACL routes#3252
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Summary:
allfor gfwlist/custom-rules profiles.Why:
UDP relay decisions are made against IP endpoints. Hostname-heavy ACLs such as gfwlist and custom-rules can therefore bypass the selected UDP fallback even when the user configured one, which prevents QUIC/HTTP3 traffic from reaching the fallback server.
Closes #3070.
Validation:
Please preserve author attribution if this PR is squashed or reworked:
Co-authored-by: Andy Ye 35905412+TurboTheTurtle@users.noreply.github.com