[Bug]: Sigma noise setting is ignored

[paniq]

Is there an existing issue for this?

• I have searched the existing issues and checked the recent builds/commits

What happened?

Attempting to use Sigma noise=0 with the Heun sampler, I notice that it is always set to 1, no matter what I set up.

Forcing it to be a different value with the X/Y/Z prompt matrix works, so I know what it should look like, and what it is set to instead.

Steps to reproduce the problem

1. Set sampler to Heun, sigma churn in "Sampler parameters" to 1
2. Render arbitrary prompt with sigma noise=0 and sigma noise=1

What should have happened?

N/A

Commit where the problem happens

5cea278

What platforms do you use to access the UI ?

No response

What browsers do you use to access the UI ?

No response

Command Line Arguments

N/A

List of extensions

embedding-inspector
sd-dynamic-prompts
sd-dynamic-thresholding

Console logs

N/A

Additional information

No response

[paniq]

also, the sigma churn slider doesn't use the full possible range (0..100)