feat(frontend): multi-node cloning initial implementation (#6216)

* feat(frontend): multinode cloning initial implementation

* fix(frontend): harden live node detection in multinode cloning

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* fix(frontend): add aria label to clone inbound modal

* fix(frontend): shallow copy inbound settings during cloning

* fix(frontend): avoid potential port conflict during testing

* fix(frontend): selection buttons and websocket selection reset fix

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Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

internal/web/translation/zh-CN.json

@@ -412,6 +412,8 @@
         "inboundCreateSuccess": "入站连接已成功创建",
         "bulkDeleted": "已删除 {count} 个入站",
         "bulkDeletedMixed": "已删除 {ok} 个，失败 {failed} 个",
+        "clonedMany": "已克隆 {count} 个入站",
+        "clonedMixed": "已克隆 {ok} 个，失败 {failed} 个",
         "inboundDeleteSuccess": "入站连接已成功删除",
         "inboundClientAddSuccess": "已添加入站客户端",
         "inboundClientDeleteSuccess": "入站客户端已删除",