### What?
Fixes "Invalid time value" error in the DocumentLocked modal when
displaying the last edited timestamp.
### Why?
The `formatDate` function was passing a timestamp number directly to
`Intl.DateTimeFormat().format()`, which expects a Date object. When
`updatedAt` is a number (timestamp), this causes an "Invalid time value"
error.
### How?
Wrap the date parameter with `new Date()` before passing it to
`Intl.DateTimeFormat().format()` to properly convert the timestamp to a
Date object.
Fixes#14016
394000d07c