New UMA Material HDPipeline does not allow adding Texture Channels

[azcoffeehabit]

Describe the bug
New UMA Material HDPipeline does not allow adding Texture Channels.

Setting Texture Channels in the Unity Editor to a value other than 0 reset the value to 0.

Multiple pipeline options will exhibit the same behavior if HDPipeline is included in the list.

Environment (please complete the following information):

• Unity Version: 6000.0.16f1
• UMA Version: 2.13
• Rendering Pipeline: HDRP
• Platform Build (if not editor):

To Reproduce
Create a new HDRP/Lit Material
Create a new UMA Material.
Assign Material.
Select HDPipeline.
Texture Channels will revert to 0

Expected behavior
Texture channels should allow modification

Screenshots

Additional context
Add any other context about the problem here.

[azcoffeehabit]

Looking at the example HDRP UMA Mat there is no SRP Selected

[azcoffeehabit]

I was able to create the HDRP/Lit UMA Material by not setting the SRP per the example material