Adds pageType as attribute for optimizely

[Isabella-Mitchell]

Resolves JIRA:

Summary

A very high-level summary of easily-reproducible changes that can be understood by non-devs, and why these changes where made.

Code changes

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Developer Checklist

• [ ] 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

• [ ] 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

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