Web Viewer: Allow input of values beyond uisoftmin and uisoftmax

[sharktacos]

Currently, the Web Viewer appears to caps values with uisoftmin and uisoftmax. Ideally, users should be able to manually input values outside of these soft min and max limits in the Web Viewer.

[jstone-lucasfilm]

Adding a link to the MaterialX Web Viewer for reference:

https://academysoftwarefoundation.github.io/MaterialX/

[krishi-saripalli]

Hi! I'd be happy to claim this issue for tommorow's Dev Day.

[jstone-lucasfilm]

I hear from @krishi-saripalli that he needs to pass on this project, so I'm marking it as unassigned again!