Support \\ in explorer plugin

**Is your feature request related to a problem? Please describe.**

When copy pasting a path from my python log file or console, sometimes it prints with the `\\` separator

**Describe the solution you'd like**

Have flow automatically convert `\\` to `\`, similar to the PR that converts `/` to `\`

**Describe alternatives you've considered**

Manually replace `\\` with `\`

**Additional context**

Add any other context or screenshots about the feature request here.