Write test cases for ThemeToggle component

[rohit3171999]

Task

Write comprehensive test cases for the ThemeToggle component located at src/components/layout/ThemeToggle/ThemeToggle.tsx using Vitest and React Testing Library.

Requirements

• Test rendering of ThemeToggle component
• Validate theme switch behavior (toggle between sun and moon icons)
• Ensure DaisyUI classes (swap, swap-rotate, theme-controller) are applied correctly
• Confirm accessibility for the switch
• Cover all functional and edge cases

Guidelines

• Follow project TDD standards and preferred test structure
• Place the test file as ThemeToggle.test.tsx in the same directory as the component
• Use semantic queries (getByRole, etc.) and AAA pattern
• Reference the main component source code

Assignee

@KARUNANS2004 will be responsible for implementing these tests.