fix(i18n): translate MCP UI strings from Korean to English in en locale
The English locale (en) contained Korean translations for MCP server
management UI strings. This caused the Settings -> System -> MCP Servers
section to display in Korean when the user's browser language is English.
Fixed:
- tree_view: '트리' -> 'Tree'
- raw_view: '원본' -> 'Raw'
- mcp_servers_title: 'MCP 서버' -> 'MCP Servers'
- mcp_servers_desc: 'config.yaml의 MCP 서버를 관리합니다.' -> 'Manage MCP servers configured in config.yaml.'
- mcp_no_servers, mcp_add_server, mcp_field_name, mcp_transport_label,
mcp_field_command, mcp_field_args, mcp_field_url, mcp_field_timeout,
mcp_save, mcp_cancel, mcp_name_required, mcp_url_required,
mcp_command_required, mcp_saved, mcp_save_failed,
mcp_delete_confirm_title, mcp_delete_confirm_message, mcp_deleted,
mcp_delete_failed, mcp_load_failed
Closes #1252
3b614c4cd5
