Implement "Click-to-Load" logic for historical lists.

[JonathanPschl]

Description

When a user clicks a list in the history sidebar, the app should fetch the full details for that recipe and update the main "Shopping List" view.
The selected historical data should replace the current shopping list and reflect immediately in the UI.

Acceptance Criteria

• Clicking a history item triggers a call to GET /api/history/{id}.
• The global state (or local component state) for the current shopping list is overwritten with the fetched data.
• The UI updates immediately to show the ingredients of the selected historical list.