test:added test cases for bottomNavigationPage and categoriesPage

This issue tracks the addition of test cases for the following components:

 - BottomNavPage: Implemented unit/integration tests to verify navigation functionality, tab switching, and proper route handling.
 - CategoriesPage: Added test coverage for category listing, filtering, and user interaction scenarios.

Changes Included

 - Created test files for BottomNav component
 - Created test files for CategoriesPage component
 - created test files for CategoryTags component
 - Ensured adequate test coverage for core functionality
 - Verified tests pass successfully

Testing

All new test cases have been executed and are passing as expected.

Related Information

 - Component: Navigation & Categories
 - Test Type: Unit/Integration tests