Integration tests use toggles to determine if radio schedule is enabled or not

[karinathomasbbc]

Summary

Makes the integration tests more robust: we enabled the On Demand radio schedule toggle on the test environment for Gahuza, and this caused the integration tests to fail

Code changes

• Create new fetchToggles helper
• Refactor integration tests which check for the presence or absence of the radio schedule

Developer Checklist - N/A

• UX
  • UX Criteria met (visual UX & screenreader UX)
• Accessibility
  • Accessibility Acceptance Criteria met
  • Accessibility swarm completed
  • Component Health updated
  • P1 accessibility bugs resolved
  • P2/P3 accessibility bugs planned (if not resolved)
• Security
  • Security issues addressed
  • Threat Model updated
• Documentation
  • Docs updated (runbook, READMEs)
• Testing
  • Feature tested on relevant environments
• Comms
  • Relevant parties notified of changes

Testing - N/A

• Manual Testing required?
  • Local (Ready-For-Test, Local)
  • Test (Ready-For-Test, Test)
  • Preview (Ready-For-Test, Preview)
  • Live (Ready-For-Test, Live)
• Manual Testing complete?
  • Local
  • Test
  • Preview
  • Live

Additional Testing Steps

PR checks only

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