This PR adds a button to the `/account` view which allows users to reset
their preferences on-demand. This is to that editors can quickly reset their
preferences via the admin ui without the need of accessing the db directly,
which was simply not possible before. To do this, we add a new button at
the bottom of the account view which performs a standard `DELETE`
request using the REST API to the `'payload-preferences'` collection.
Related: #9949
Demo: [Posts-reset-prefs--Payload.webm](https://github.com/user-attachments/assets/560cbbe3-06ef-4b7c-b3c2-9702883b1fc6)
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