fix(Carousel) Fix onCycleTo not being called when slide changed

[Jerit3787]

Proposed changes

fixes #639
This should fix onCycleTo function not being called due to lastCenter != this.center being always false. This pull request moves the position of lastCenter variable to be updated before the this.center was updated.

Screenshots (if appropriate) or codepen:

Previous behavior: CodePen

Intended behavior: Preview / Code

Types of changes

• Bug fix (non-breaking change which fixes an issue).
• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality to change).

Checklist:

• I have read the CONTRIBUTING document.
• My commit messages follows the conventional commit format
• My change requires a change to the documentation, and updated it accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.