[Stepper]: Styling themes discrepancies

[adrianptrv]

There are discrepancies between some of the Stepper theme styles and their UI Kits.

On the dark version of the Fluent theme - the completed version of the step has a dark gray background, while in the UI kit, it has a light gray background.
UI Kit:

Current:

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On the dark version of the Bootstrap theme - again the completed version of the step have a gray background and black icon/text color, while in the UI kit is with white icon/text color.
UI Kit:

Current:

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On the dark version of the Material theme - the normal state of the step, when the stepper is not linear, has a gray background with black icon/text color, while in the UI kit, it has white icon/text color.
Ui Kit:

Current:

[DiLazarova]

The discrepancies have been fixed in the Figma UI kit, so the issue could be closed.