fix: handle non-existing getImages method in Carousel class

This commit addresses the issue where a call to the undefined method getImages on the possible false in Carousel.php was causing an error. A check is now in place before calling the method. Consequently, the phpstan-baseline.neon file has also been updated to remove the now unnecessary error suppression.

Related: #28 (closed)

merged

mentioned in commit fccb3702

This MR is included in version 2.0.1

The release is available on GitLab release.

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