BUG: Explorer Plugin Cannot Save Network Path Root to Quick Access Links

### Checks

- [X] I have checked that this issue has not already been reported.

- [X] I am using the latest version of Flow Launcher.

### Problem Description

When in the Explorer Plugin, and trying to add a directory to Quick Access Links (or also applies to "Index Search Excluded Paths"), if I browse to a local root drive directory (eg, F drive) I can add "F:\", but if I try to add the root directory of a network path (eg, "\\NAS_ROOT" I get the following error:
`You can't open this location using this program. Please try a different location.`

It does work fine if the network drive is mapped to a drive letter, but I have need of being able to use the network path (and the error occurs both with HOSTNAME and IP Address).

### To Reproduce

1. Open Explorer Plugin
2. Go to Quick Access Links (or Index Search Excluded Paths)
3. Add
4. Browse to a network path (eg, \\NAS_ROOT)
5. Select Folder
6. Encounter error: `You can't open this location using this program. Please try a different location.`

### Screenshots


### Flow Launcher Version

1.17.1

### Windows Build Number

10.0.19045.3930

### Error Log

Log contains no errors anytime close to time period of above issue (ie, it does not appear to be logged in the log).

```shell

Replace this line with the important log contents.

```