Add storybook entry for Step shared component
What does this MR do and why?
Add a storybook entry for Step component
Move template calculation to computed
Related to #435055 (closed)
Screenshots or screen recordings
| Case | Screenshot |
|---|---|
| Active step |  |
| Finished Step |  |
| Step with error |  |
How to set up and validate locally
Follow the storybook setup instructions
When you already have a storybook setup in place - yarn storybook:start
Edited by Diana Zubova