Write-Progress indeterminate percent indicator #1257

Expected Behavior

If I use WriteProgress without a PercentComplete argument, it should show an indeterminate progress bar just like when I do not use WriteProgress. Alternatively, it would be great if we can add a flag to specify that that the progress is uncertain like -PercentUnknown or something.

Actual Behavior

Steps to Reproduce the Problem

• Sitecore PowerShell Extensions 6.2.0.34182
• Sitecore 10.0.1
• Code: Write-Progress -Status "Processing..." -Activity "testing"