fix: Close #187788, recovery tree view state

[yiliang114]

Steps:

1. git clone vscode sourcecode
2. compile and use ./scripts/code-web.sh --playground to start
3. After expanding the folder, refresh the page. You'll find all the folders closed.
4. Then you can look at the gif effect I uploaded first, and after switching to my branch and refreshing the page, you can find that the file tree has been restored to its original state.

[lramos15]

Thanks!