feat: Update workflow menu to allow quick toggling modes (#9436)

## Summary

Adds a quick toggle mode button to the workflow menu for users to easier
discover & change modes

## Changes

- **What**: 
- remove specific app mode rendering
- increase spacing around breadcrumbs menu
- add current mode text to menu
- add base button variant

## Screenshots (if applicable)

<img width="258" height="137" alt="image"
src="https://github.com/user-attachments/assets/2ed7b276-c52c-44cd-b107-399f769574af"
/>
<img width="233" height="172" alt="image"
src="https://github.com/user-attachments/assets/2639d30c-2150-4434-a86b-732649c4b142"
/>

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-9436-feat-Update-workflow-menu-to-allow-quick-toggling-modes-31a6d73d365081b589eee0e03cd6f1de)
by [Unito](https://www.unito.io)

---------

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

src/locales/en/main.json

@@ -2605,6 +2605,9 @@
     "deleteBlueprint": "Delete Blueprint",
     "enterNewName": "Enter new name",
     "missingNodesWarning": "Workflow contains unsupported nodes (highlighted red).",
+    "graph": "Graph",
+    "app": "App",
+    "enterNodeGraph": "Enter node graph",
     "share": "Share"
   },
   "shortcuts": {