chore: Removed enzyme package and its last references

[v-viyada]

Details

As we have already replaced enzyme with react testing library in all unit test cases so this is final PR to remove enzyme package from repo.

Motivation

Existing User Story : User Story 2142858: Enzyme replacement in files under src/tests/unit/tests/injected

Context

Pull request checklist

• [n/a] Addresses an existing issue: #0000
• [x] Ran yarn fastpass
• [x] Added/updated relevant unit test(s) (and ran yarn test)
• [x] Verified code coverage for the changes made. Check coverage report at: <rootDir>/test-results/unit/coverage
• [x] PR title AND final merge commit title both start with a semantic tag (fix:, chore:, feat(feature-name):, refactor:). See CONTRIBUTING.md.
• [n/a] (UI changes only) Added screenshots/GIFs to description above
• [n/a] (UI changes only) Verified usability with NVDA/JAWS