hotfix(panel): bind inbounds to stack wildcard instead of registered public address

Inbounds were pinned to the server's registered public address
(ipv4: PublicAddress, ipv6: PublicAddressV6), so addresses not
registered as 'the' public address - intranet NICs used for relay
landings, additional v6 addresses - had nothing listening and
intranet relays were unreachable (field-verified: ss showed the
landing port bound to the public IP only). 3x-ui/xray bind the
wildcard and serve these paths fine.

- listenAddress: explicit bindAddress still wins; ipv4 -> 0.0.0.0,
  ipv6 -> ::, dual -> :: (ipv6 wildcard per user decision
  2026-10-21: multi-v6 machines must serve all their v6 addresses).
- ResolveBindAddress: no longer resolves the registered address
  into a bind pin (that resolution was the production path of the
  pinning via resourceForNode/resourceForNodeExit); returns
  ("", nil) for all stacks, as it already did for dual/absent.
- serverAddress (client connection address / subscription host)
  is unchanged.
- Golden fixtures updated for the three listen fields that
  intentionally change; new listen_hotfix_test.go covers the
  listenAddress cases and the resourceForNode/exit deploy chains.

panel-go/testdata/golden_resources.json

@@ -12,7 +12,7 @@
       {
         "type": "vless",
         "tag": "ng-nodrf-in",
-        "listen": "203.0.113.10",
+        "listen": "0.0.0.0",
         "listen_port": 23456,
         "users": [
           {
@@ -76,7 +76,7 @@
       {
         "type": "shadowsocks",
         "tag": "ng-nodrf-exit-in",
-        "listen": "203.0.113.20",
+        "listen": "0.0.0.0",
         "listen_port": 23457,
         "method": "2022-blake3-aes-256-gcm",
         "password": "AwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISI="
@@ -111,7 +111,7 @@
       {
         "type": "shadowsocks",
         "tag": "ng-nodss-in",
-        "listen": "203.0.113.11",
+        "listen": "0.0.0.0",
         "listen_port": 23458,
         "method": "2022-blake3-aes-128-gcm",
         "password": "CwwNDg8QERITFBUWFxgZGg==",