refactor: vibration tests to reduce redundancy and improve readability

[Viole07]

Platforms affected

JavaScript (test.js)

Motivation and Context

This refactoring improves the readability and maintainability of the vibration test code by consolidating repetitive functions and reducing redundancy.

Description

• Refactored code to streamline vibration test functions and minimize duplication.
• Reorganized HTML generation and action button creation to improve clarity.
• Simplified the cancellation logic and optimized timeout handling.

Testing

Manually verified vibration functionality across tests, ensuring both initiation and cancellation work as expected for all supported patterns.

Checklist

• [x] I've run the tests to ensure all new and existing tests pass.
• [ ] I added automated test coverage where applicable.
• [ ] Commit is prefixed with (js) as this change affects all JavaScript platforms supporting vibration.
• [ ] If this Pull Request resolves an issue, I linked to the issue in the text above.
• [ ] I've updated the documentation if necessary.