fix(stepper): no longer touches InfieldButton classes

[mdt2]

Description

Per issue #2234, Stepper shouldn't be using classes that it doesn't own. This PR adds some properties to InfieldButton and uses their mods to modify them for Stepper so that we no longer touch InfieldButton classes inside our Stepper component. There should be no visual differences to the components.

How and where has this been tested?

Please tag yourself on the tests you've marked complete to confirm the tests have been run by someone other than the author.

Validation steps

Note: When reviewing the code, filter commits so that you aren't reviewing separate changes made in PR #2234.

1. Stepper variants match prod:

• on the docs site in every state (focus, hover, active, keyboard focus)
• in Storybook in every state (focus, hover, active, keyboard focus)

2. InfieldButton variants match prod:

• on the docs site in every state (focus, hover, active, keyboard focus)
• in Storybook in every state (focus, hover, active, keyboard focus)

3. The naming of the custom props in the code:

• makes sense
• aligns with existing conventions

Tested by @jawinn

Regression testing

Validate:

1. The documentation pages for at least two other components are still loading, including:

• The pages render correctly, are accessible, and are responsive.

2. If components have been modified, VRTs have been run on this branch:

• VRTs have been run and looked at.
• Any VRT changes have been accepted (by reviewer and/or PR author), or there are no changes.

To-do list

• I have read the contribution guidelines.
• I have updated relevant storybook stories and templates.
• I have tested these changes in Windows High Contrast mode.
• If my change impacts other components, I have tested to make sure they don't break.
• If my change impacts documentation, I have updated the documentation accordingly.
• ✨ This pull request is ready to merge. ✨

[github-actions]

File metrics

Summary

Total size: 4.06 MB^*
Total change (Δ): ⬇ 1.25 KB (0.03%)

Package	Size	Δ
infieldbutton	58.83 KB	⬇ 1.72 KB
stepper	68.26 KB	⬆ 0.48 KB

Details

infieldbutton

File	Size	Base	Δ
Total	60.55 KB	58.83 KB	⬇ 1.72 KB (2.84%)
index-base.css	16.22 KB	15.71 KB	⬇ 0.53 KB (3.17%)
index-theme.css	2.72 KB	2.72 KB	- (no change)
index-vars.css	18.37 KB	17.85 KB	⬇ 0.53 KB (2.80%)
index.css	18.37 KB	17.85 KB	⬇ 0.53 KB (2.80%)
mods.json	2.16 KB	1.98 KB	⬇ 0.18 KB (8.16%)
themes/express.css	1.64 KB	1.64 KB	- (no change)
themes/spectrum.css	1.08 KB	1.08 KB	- (no change)

stepper

File	Size	Base	Δ
Total	67.79 KB	68.26 KB	⬆ 0.48 KB (0.69%)
index-base.css	17.22 KB	17.55 KB	⬆ 0.34 KB (1.92%)
index-theme.css	3.98 KB	3.85 KB	⬇ 0.13 KB (3.27%)
index-vars.css	20.62 KB	20.82 KB	⬆ 0.21 KB (0.98%)
index.css	20.62 KB	20.82 KB	⬆ 0.21 KB (0.98%)
mods.json	1.38 KB	1.38 KB	⬇ 0.01 KB (0.35%)
themes/express.css	2.30 KB	2.25 KB	⬇ 0.05 KB (2.17%)
themes/spectrum.css	1.67 KB	1.59 KB	⬇ 0.08 KB (4.78%)

^* An ASCII character in UTF-8 is 8 bits or 1 byte.

[github-actions]

🚀 Deployed on https://pr-2300--spectrum-css.netlify.app

[jawinn]

Looks good to me! I just have one question about two of the newly defined custom properties on .spectrum-InfieldButton that may not be needed.