[4.x] Wizard programmatic step navigation without query string

[andrefelipe18]

Description

The Wizard component currently only supports programmatic forward navigation via the nextStep() method, which emits a browser event handled by Alpine. There is no native way to programmatically navigate to a specific step or move backwards without relying on query strings or directly mutating Alpine state.

This pull request introduces a new exposed Livewire method that allows navigating to a specific wizard step in a controlled and event-driven way. The implementation follows the existing Wizard architecture and event conventions, keeping the Wizard as the single source of truth for step state.

Visual changes

No visual changes.

Functional changes

• Code style has been fixed by running the composer cs command.
• Changes have been tested to not break existing functionality.
• Documentation is up-to-date.