Add toggle link visibility button on canvas menu (#1070)

* Basic link visibility toggle

* Icon change

* nit

* Update litegraph

* nit

* Add playwright test

* Update test expectations [skip ci]

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

src/i18n.ts

@@ -100,7 +100,8 @@ const messages = {
       zoomOut: 'Zoom Out',
       resetView: 'Reset View',
       selectMode: 'Select Mode',
-      panMode: 'Pan Mode'
+      panMode: 'Pan Mode',
+      toggleLinkVisibility: 'Toggle Link Visibility'
     }
   },
   zh: {
@@ -194,6 +195,14 @@ const messages = {
         upscale: '2 Pass Upscale',
         flux_schnell: 'Flux Schnell'
       }
+    },
+    graphCanvasMenu: {
+      zoomIn: '放大',
+      zoomOut: '缩小',
+      resetView: '重置视图',
+      selectMode: '选择模式',
+      panMode: '平移模式',
+      toggleLinkVisibility: '切换链接可见性'
     }
   }
   // TODO: Add more languages