[feat] update navigation mode default to legacy and improve display name (#5181)

* [feat] update navigation mode default to legacy and improve display name

- Change defaultsByInstallVersion from 'standard' to 'legacy' for version 1.25.0
- Update legacy navigation display name from 'Left-Click Pan (Legacy)' to 'Drag Navigation'
- Maintains both navigation systems over long term while improving UX clarity

* Update locales [skip ci]

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Co-authored-by: github-actions <github-actions@github.com>

src/locales/ko/settings.json

@@ -32,7 +32,7 @@
   "Comfy_Canvas_NavigationMode": {
     "name": "캔버스 내비게이션 모드",
     "options": {
-      "Left-Click Pan (Legacy)": "왼쪽 클릭 이동(레거시)",
+      "Drag Navigation": "드래그 내비게이션",
       "Standard (New)": "표준(신규)"
     }
   },