Expand drop zone for docking run button (#6193)

Expand the drop zone for docking the run button to be a bit more
forgiving.
<img width="494" height="99" alt="image"
src="https://github.com/user-attachments/assets/97eb6948-211d-4ed6-b06c-d6fb57b45f0b"
/>

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6193-Expand-drop-zone-for-docking-run-button-2946d73d3650816d996fdc57022161db)
by [Unito](https://www.unito.io)

browser_tests/helpers/actionbar.ts

@@ -13,7 +13,7 @@ export class ComfyActionbar {
 
   async isDocked() {
     const className = await this.root.getAttribute('class')
-    return className?.includes('is-docked') ?? false
+    return className?.includes('static') ?? false
   }
 }