Fixing issue#128 default Props error

[AsjidAle]

This PR addresses the issue reported in #128, where a warning is displayed for using defaultProps in function components. The warning indicates that support for defaultProps will be removed in future major React releases.

Issue was this

Changes:

1. Replaced the defaultProps with JavaScript default parameters in the function signature of the Step functional component.
2. Ensured proper initialization of default values without altering the component's existing functionality.

Notes:

• The functionality and behavior of the component remain unchanged.
• This is a refactor aimed at future-proofing the codebase and resolving the deprecation warning.
• Thorough testing has been conducted to confirm that the component behaves as expected after the update.

This refactor ensures compatibility with upcoming React updates while addressing the reported issue.