Docking action bar on top menu bar (#1119)

* Teleport when docked

* Docking logic

* Remove unnecessary v-show

* Docked panel style

* Drop zone highlight

* Rename test

* Add playwright test

browser_tests/helpers/actionbar.ts

@@ -9,6 +9,11 @@ export class ComfyActionbar {
     this.root = page.locator('.actionbar')
     this.queueButton = new ComfyQueueButton(this)
   }
+
+  async isDocked() {
+    const className = await this.root.getAttribute('class')
+    return className?.includes('is-docked') ?? false
+  }
 }
 
 class ComfyQueueButton {