Add flex gen story amount

[Georges-GNM]

What does this change?

How to test

How can we measure success?

Have we considered potential risks?

Images

Accessibility

• Tested with screen reader
• Navigable with keyboard
• Colour contrast passed
• The change doesn't use only colour to convey meaning

Deployment

• Updated facia-tool to use latest version
• Updated frontend to use latest version
• Updated MAPI to use latest version
• Updated Ophan to use latest version
• Updated story-packages to use latest version
• Updated apple-news to use latest version
• Checked for other downstream dependencies (perhaps via snyk or github search)

[gu-scala-library-release]

@Georges-GNM has published a preview version of this PR with release workflow run #60, based on commit b86b241:

14.0.0-PREVIEW.gladd-flexible-story-limit.2025-01-07T2327.b86b2417

Want to make another preview release?

Click 'Run workflow' in the GitHub UI, specifying the gl/add-flexible-story-limit branch, or use the GitHub CLI command:

gh workflow run release.yml --ref gl/add-flexible-story-limit

Want to make a full release after this PR is merged?

Click 'Run workflow' in the GitHub UI, leaving the branch as the default, or use the GitHub CLI command:

gh workflow run release.yml