Update viewjobhistorycommand (#7911)

## Summary

Add the key binding to the schema and mark the setting as hidden.

https://github.com/Comfy-Org/ComfyUI_frontend/pull/7805#pullrequestreview-3627969654

## Changes

**What**: 
- Added a new `shortcuts` field to the user settings database model.
- Marked the `shortcuts` field as `hidden` in the `API/Schema` to ensure
it remains internal for now, as suggested by the reviewer @benceruleanlu
.
- Migrated shortcut storage logic from frontend-only (store) to
persistent backend storage.
- **Breaking**: None
- **Dependencies**:  None

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7911-Update-viewjobhistorycommand-2e26d73d3650813297c3f9f7deb53b14)
by [Unito](https://www.unito.io)

src/schemas/apiSchema.ts

@@ -467,6 +467,7 @@ const zSettings = z.object({
   'Comfy.Notification.ShowVersionUpdates': z.boolean(),
   'Comfy.QueueButton.BatchCountLimit': z.number(),
   'Comfy.Queue.MaxHistoryItems': z.number(),
+  'Comfy.Queue.History.Expanded': z.boolean(),
   'Comfy.Keybinding.UnsetBindings': z.array(zKeybinding),
   'Comfy.Keybinding.NewBindings': z.array(zKeybinding),
   'Comfy.Extension.Disabled': z.array(z.string()),