🧪 Add unit tests for Footer component

[Animesh-jsx]

🎯 What: Added unit tests for the previously untested Footer component in src/components/layout/Footer.tsx.
📊 Coverage: The test suite covers the happy path scenarios, specifically verifying the rendering of:

• Brand name ("Hydra Drop")
• Company links (About Us, Careers, etc.) with correct routing paths
• Support links (Contact Us, FAQ, etc.) with correct routing paths
• Subscription form elements (input field and submit button)
  ✨ Result: Increased test coverage and confidence that the static footer navigation components and internal routing links behave correctly.

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PR created automatically by Jules for task 7842571592246509831 started by @Animesh-jsx

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