Migrate enzyme "/public" folder unit tests to React Testing Library.

A.C.

• All Enzyme tests are migrated to RTL
• All tests are passing in CI 

ENZYME TEST FILES in public folder:

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1. public/components/dashboard/dashboards-page/cluster-dashboard/getting-started/{}tests{}/cluster-setup-getting-started-card.spec.tsx

2. public/components/dashboard/dashboards-page/cluster-dashboard/getting-started/{}tests{}/explore-admin-features-getting-started-card.spec.tsx

3. public/components/dashboard/dashboards-page/cluster-dashboard/getting-started/{}tests{}/getting-started-section.spec.tsx

4. public/components/dashboard/project-dashboard/getting-started/{}tests{}/DeveloperFeaturesGettingStartedCard.spec.tsx

5. public/components/dashboard/project-dashboard/getting-started/{}tests{}/GettingStartedSection.spec.tsx

6. public/components/dashboard/project-dashboard/getting-started/{}tests{}/SampleGettingStartedCard.spec.tsx

7. public/components/utils/{}tests{}/single-typeahead-dropdown.spec.tsx