bug: ActionSheet CSS custom properties are applied to 'selected' role button since 8.7.12 #30921

Prerequisites

• I have read the Contributing Guidelines.
• I agree to follow the Code of Conduct.
• I have searched for existing issues that already report this problem, without success.

Ionic Framework Version

v8.x

Current Behavior

When we set the role: 'selected' property on an ActionSheetButton the rendered html button is missing class action-sheet-selected. This results in missing applied css styles applied, e.g. if we set --button-color-selected on for the action sheet's custom css class, that style is not shown.

Example ActionSheetButton

    {
      text: 'Share',
      role: 'selected',
      data: {
        action: 'share',
      },
    },

Other action-sheet-ROLE classes (e.g. destructive are still applied to the button.

Expected Behavior

The css class action-sheet-selected is applied if a button's role is set to selected and therefore the custom css properties are taking action.

For instance if I set --button-color-selected: purple; (with a proper css class attached to my action sheet) I expect that the button with role selected is showing a purple text color.

Steps to Reproduce

1. go to https://github.com/pjaecks-carecompass/ionic-action-sheet-bug
2. clone repository
3. npm ci - this will install @ionic/angular@8.7.12
4. npm start, open http://localhost:4200
5. tap the "Open" button to show the ActionSheet
6. check for the text color of the "Share" button - it is the default text color
7. now install previous ionic angular version with npm install --save --save-exact @ionic/angular@8.7.11
8. repeat step 4 and 5
9. check the text color of the "Share" button - this is now purple because the styling defined in app.component.scss is applied

Code Reproduction URL

https://github.com/pjaecks-carecompass/ionic-action-sheet-bug

Ionic Info

Ionic:

   Ionic CLI                     : 5.4.16 (/home/USER/.npm/_npx/864a9e3c2cd0cf50/node_modules/ionic)
   Ionic Framework               : not installed
   @angular-devkit/build-angular : 20.3.14
   @angular-devkit/schematics    : 20.3.14
   @angular/cli                  : 20.3.14
   @ionic/angular-toolkit        : 12.3.0

Utility:

   cordova-res                          : not installed
   native-run (update available: 2.0.3) : 2.0.1

System:

   NodeJS : v22.21.0 (/home/USER/.nvm/versions/node/v22.21.0/bin/node)
   npm    : 10.9.4
   OS     : Linux 6.6

Additional Information

I suspect #30769 to introduce this.

This change (bug?) was introduced in 8.7.12.

With 8.7.11 it is still working fine.