[BUG]: Umb.PropertyEditorUi.DatePicker doesn't reset when the underlying model is reset

[mattbrailsford]

Describe the bug
If I have a Umb.PropertyEditorUi.DatePicker property rendering in a umb-property-dataset, and I reset the properties bound to that dataset, most property editors reset their value, but the date picker doesn't appear to do so.

This should also reset it's value back to the default if the model changes in this way.

To Reproduce
Steps to reproduce the behavior:

1. Create an editor UI that renders an umb-property that uses a Umb.PropertyEditorUi.DatePicker inside a umb-property-dataset
2. Setup a state to hold the property values
3. Bind the umb-property-dataset to the property values collection
4. Setup a button that when clicked, resets the property values collection to []

Expected behavior
I would expect the date picker to reset

Desktop (please complete the following information):

• OS: Windows
• Browser Brave (Chromium)
• Version Version 1.65.123

[iOvergaard]

I just tested this on 14.1.1 and was able to clear the value through the UMB_PROPERTY_DATASET_CONTEXT. I believe it was fixed because of umbraco/Umbraco.CMS.Backoffice#2115, which got released in 14.1.1, but it could have been something else. I'll mark this as completed.