test: Functional RTL for email report modal

[lyndsiWilliams]

SUMMARY

Implements functional RTL testing for the email report modal

TESTING INSTRUCTIONS

• Navigate to the following location in your terminal: src/components/ReportModal/
• Use the following command to observe the test suite: npm run test -t index.test.tsx

ADDITIONAL INFORMATION

• Has associated issue:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[lyndsiWilliams]

Continued at this PR.