fix: adjust max-width for OakDownloadsJourneyChildSubjectTierSelector component

[assadk88]

How to review this PR

Leave this text block for the reviewer

• Check component hierarchy is followed correctly
• Check the design Heuristics have been followed
• Check naming conventions have been applied
• Check for these gotchyas:
  • Missing exports for Oak components
  • Accidental export of Internal components
  • Snapshots of unexpected components have been modified
  • Circular dependencies
  • Code duplication (via not using base components)
  • Non-functional storybook for this or related components
  • Sensitve files changed eg. atoms, or style tokens
  • Relative imports
  • Default exports

Add your PR description below

I have set the maximum width of the inline banner of OakDownloadsJourneyChildSubjectTierSelector component to 640px

Link to the design doc

A link to the component in the deployment preview

https://deploy-preview-314--lively-meringue-8ebd43.netlify.app/?path=/docs/components-organisms-curriculum-oakdownloadsjourneychildsubjecttierselector--docs

Testing instructions

1. Visit the deployment URL and use Chrome DevTools to verify that the maximum width of the inline banner for the OakDownloadsJourneyChildSubjectTierSelector component is 640px

ACs

• Set the maximum width of the banner to 640px

[notion-workspace]

📋 Set a max width for the info banner on downloads

[netlify]

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[HelenHarlow]

Looks good!

[rightsaidjames]

LGTM, works as described