Files: Drives widget storage details don't update without reopen

[generalguy41]

Describe the bug
Drives widget storage details don't update without reopen of Files.

To Reproduce
Steps to reproduce the behavior:

1. Go to the Home page.
2. Note the size of a drive.
   
3. Change the files in that drive (delete everything, add a big file, etc.)
   
4. Go back to the Home page. The size won't be updated no matter if you switch directories. Only updates if you restart/open a new window.
   

Expected behavior
Drives should refresh on navigation to the Home page.

Desktop:

• OS Version: Windows 10 2004 20246.1
• App version: v0.19.0.0

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