Activation of Responsive Images does not apply to carousel in 12.0.1

Hi,

the new bootstrap_package version 12.0.1 the activation of responsive images does not work with carousel anymore with this
```
// Enable Responsive Images

lib.contentElement.settings.responsiveimages.variants {
default {
sizes {
1\.5x {
multiplier = 1.5
}
2x {
multiplier = 2
}
}
}
}
```

What did change?

Thanks

Start with the carousel's responsive-image rendering and the responsiveimages configuration shown in the report. Compare the behavior in bootstrap_package 12.0.1 with the expected responsive-image variants, then verify that the configured 1.5x and 2x sizes are applied to carousel images.

Written by the indexing model from the issue text.