Update mapping from gradient strength input to `decay_length` recipe entry

[mogres]

Use Case

Currently, the gradient strength is mapped to the decay_length parameter in the recipe json as decay_length = 1 - gradient strength. This limits the decay length between 0 and 1 since the gradient strength is restricted between 0 and 1.

Updated recipes in the manuscript use weaker gradients with decay lengths >1. We want to include these recipes and also have a more robust mapping between the two quantities. I propose it would be more appropriate to map decay_length = 1 / gradient strength with the appropriate checks to avoid division by zero.

Acceptance Criteria

Run a recipe with gradient strength > 1

Details

• This method would require a check for division by zero
• This method would require changing the slider limits from 0-0.99 to 0.01-100 (or even higher)

Possible approach

• Update handleStrengthChange to update mapping
• Add checks to avoid division by zero
• Update the range of valid values for gradient strength

[meganrm]

check with UX before merging