MultiSelect: Scoped stylings via [dt] don't get applied

[gregorwinkler]

Describe the bug

I'm trying to add a custom styling for a p-multi-select in one component, thus I wanted to use the [dt]-property to have a scoped styling.

But no matter how I can't get these scoped styling to work on the p-multi-select. To be sure that there is no weird configuration or other errors in my environment, I followed the example from the documentation with the toggle-switch (https://primeng.org/theming#scopedtokens) and it works as intended.

So, there has to be something in the implementation of the multi-select that ignores the [dt]-property.

Pull Request Link

No response

Reason for not contributing a PR

• Lack of time
• Unsure how to implement the fix/feature
• Difficulty understanding the codebase
• Other

Other Reason

No response

Reproducer

https://stackblitz.com/edit/rxhmal66?file=src%2Fapp%2Fmulti-select-basic-demo.ts

Environment

Angular 19, PrimeNG 19

Angular version

19.0.1

PrimeNG version

v19

Node version

No response

Browser(s)

No response

Steps to reproduce the behavior

1. View Stackblitz example
2. See custom stylings in code
3. See in the rendered app that they don't get applied

Expected behavior

Stylings defined via [dt] should be applied just as styling defined in the app's general theme.

[gregorwinkler]

Resolved via #17427 in PrimeNG 19.0.6.

But custom stylings via the css function still don't work (see #17440).