feat(sub): opt-in dns and sniffer from remote Clash rules (#6868)

Public Mihomo templates ship rules, rule-providers and proxy-groups together
with a dns block those rules depend on (fake-ip ranges, nameserver policy).
Pasting a template inline keeps its dns, but pointing the global routing rules
at its URL dropped it, so URL users had to give up auto-refresh to keep it.

A new switch, subClashRemoteDNS (off by default), also takes the remote dns and
sniffer maps. It is opt-in because a remote dns block decides where clients send
every lookup. A malformed dns or sniffer value is skipped, not the whole template.
The component-test teardown now outlasts AntD Form's 10ms error debounce, which
otherwise fired after jsdom was gone.

internal/sub/service_exclude_from_sub_test.go

@@ -54,7 +54,7 @@ func TestExcludedInboundHidesLinksButKeepsUsage(t *testing.T) {
 	})
 
 	t.Run("clash", func(t *testing.T) {
-		out, header, err := NewSubClashService(false, "", NewSubService("")).GetClash("sub-excl", "req.example.com")
+		out, header, err := NewSubClashService(false, "", false, NewSubService("")).GetClash("sub-excl", "req.example.com")
 		if err != nil {
 			t.Fatalf("GetClash: %v", err)
 		}