fix(slider): runtime issue

[theJohnnyMe]

Describe pull-request

Fixing errors caught in the console during runtime, when switching pages etc.

Issue Linking:

Choose one of the following options

• Jira: Add ticket number after CDEP-: CDEP-3035
• GitHub: Include issue link

How to test

1. Check Storybook and see if the component renders and works as expected.
2. Check the demo page where the component and fixes are implemented: https://github.com/scania-digital-design-system/tegel-angular-demo/pull/101

Checklist before submission

• [ ] I have added unit tests for my changes (if applicable)
• [x] All existing tests pass
• [ ] I have updated the documentation (if applicable)

[github-actions[bot]]

Playwright test results

 361 passed

Details

 361 tests across 111 suites
 47.1 seconds
 2b7a442

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[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud