[fadi-george]

Description

One Line Summary

Adds HTML, Full Bleed, Carousel, and Carousel Bleed IAM buttons to the demo apps (demo, demo-fm, demo-pods) and lays out all 8 in a 2-column grid.

Details

Motivation

Lets us test the extra IAM layouts from the demo app. Follows the shared spec update in OneSignal/sdk-shared#66 and matches iOS (OneSignal/OneSignal-iOS-SDK#1787).

Scope

• Labels are now Top, Bottom, Center, HTML, Full, Full Bleed, Carousel, Carousel Bleed (uppercased). Existing iam_type values and test IDs (send_iam_{type}_button) are unchanged.
• InAppMessageType: 4 new entries in grid order.
• SendIamSection: rows of 2, gaps use AppSpacing.gap.
• PrimaryButton: label wrapped in FittedBox(scaleDown) so long labels shrink instead of overflowing (labels that fit are unchanged), plus an optional padding param used only by the IAM grid.
• demo-pods: drops the per-button IAM icons to match demo and the spec.
• Demo apps only. No SDK changes.

Testing

Unit testing

None needed, demo UI only.

Manual testing

Ran flutter analyze (no new issues) and flutter test in demo-pods. Checked the grid in demo on an iOS 27 simulator.

Affected code checklist

• Notifications
  • Display
  • Open
  • Push Processing
  • Confirm Deliveries
• Outcomes
• Sessions
• In-App Messaging
• REST API requests
• Public API changes

Checklist

Overview

• I have filled out all REQUIRED sections above
• PR does one thing
• Any Public API changes are explained in the PR details and conform to existing APIs

Testing

• I have included test coverage for these changes, or explained why they are not needed (demo app UI only)
• All automated tests pass, or I explained why that is not possible
• I have personally tested this on my device, or explained why that is not possible

Final pass

• Code is as readable as possible.
• I have reviewed this PR myself, ensuring it meets each checklist item

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