Pin selected items (Nodes + Groups) (#1427)

* Pin selected items (Nodes + Groups)

* Update litegraph

* Add playwright test

* nit

* Update test expectations [skip ci]

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

src/stores/commandStore.ts

@@ -428,6 +428,19 @@ export const useCommandStore = defineStore('command', () => {
         })
       }
     },
+    {
+      id: 'Comfy.Canvas.ToggleSelected.Pin',
+      icon: 'pi pi-pin',
+      label: 'Pin/Unpin Selected Items',
+      versionAdded: '1.3.33',
+      function: () => {
+        for (const item of app.canvas.selectedItems) {
+          if (item instanceof LGraphNode || item instanceof LGraphGroup) {
+            item.pin(!item.pinned)
+          }
+        }
+      }
+    },
     {
       id: 'Comfy.Canvas.ToggleSelectedNodes.Collapse',
       icon: 'pi pi-minus',