Implement Jest Tests for Box shadow generator

[Bashamega]

The Box shadow generator currently lacks Jest tests. We need to add tests to ensure its functionality and reliability.

Tasks:

• Identify the key functionalities of Box shadow generator.
• Write unit tests for:
  • Component rendering
  • User interactions
  • Props and state management
• Write integration tests for:
  • Any significant workflows (if applicable)
• Ensure all tests pass in the local environment and CI/CD pipeline.
• Update the documentation to include instructions on running the tests.

Acceptance Criteria:

• Jest tests for Box shadow generator are created and passing.

Additional Information:

• Any known issues or specific areas of concern related to Box shadow generator can be added here.