feat(hysteria2): emit UDP port hopping in subscriptions and share links

UDP Hop (finalmask.quicParams.udpHop.ports) was configurable but never surfaced in generated configs, so clients kept using the single listening port (#4789).

Share links (frontend genHysteriaLink + sub genHysteriaLink) now keep a numeric port in the authority and carry the hop range as the v2rayN-compatible mport query param, so v2rayN and other System.Uri-based importers can parse the link. Clash output sets mihomos native ports field.

Closes #4789

sub/subClashService.go

@@ -325,6 +325,12 @@ func (s *SubClashService) buildHysteriaProxy(inbound *model.Inbound, client mode
 		}
 	}
 
+	// UDP port hopping. mihomo reads the range from a dedicated `ports`
+	// field (the base `port` stays as the redirect target).
+	if hopPorts := hysteriaHopPorts(rawStream); hopPorts != "" {
+		proxy["ports"] = hopPorts
+	}
+
 	return proxy
 }