…i-instance support

- Fix major rendering/positioning/etc bugs
- Added `defaultPlacement` prop to `VTourProps` for tooltip positioning.
- Updated component to use scoped IDs and highlight classes based on the `name` prop.
- Improved CSS visibility handling for backdrop and tooltip elements.
- Refactored tests to accommodate Teleport rendering and scoped IDs.
- Renamed component CSS output to avoid conflicts with SCSS.

… in VTour component

- Introduced a new test suite for the VTour component focusing on accessibility features.
- Verified ARIA attributes, live regions, button labels, and keyboard navigation.
- Implemented helper functions for mounting the VTour component with default props.
- Updated existing jump options tests to respect accessibility configurations.
- Refactored existing tests to utilize new helper functions for improved readability and maintainability.
- Added a transition stub to ensure immediate hook execution during tests.
- Enhanced timer management in tests to ensure accurate timing and transitions.

…rove accessibility support

Release-As: 2.5.0

feat+FIX: enhance VTour component with default tooltip placement and mult…

…ter--components--vuejs-tour

chore(master): release 2.5.0