fix(android): enable hardware acceleration for IAM transparency

[fadi-george]

Description

One Line Summary

Enable hardware acceleration on the Android Activity window so in-app message WebViews render with transparent backgrounds.

Details

Motivation

Unity sets android:hardwareAccelerated="false" on its Activity, which prevents WebView transparent backgrounds from rendering. The native SDK displays in-app messages via a PopupWindow whose window inherits this setting, causing IAMs to render with an opaque white background instead of the expected transparent overlay.

Scope

Enables the FLAG_HARDWARE_ACCELERATED flag at the window level during SDK initialization. This restores WebView transparency without affecting Unity's own GL/Vulkan rendering surface. The flag is set on the Android UI thread via runOnUiThread.

Testing

Manual testing

Built and ran the demo app on an Android 16 emulator (Pixel, API 36). Verified all IAM types (top banner, bottom banner, center modal, full screen) render with correct transparency.

Affected code checklist

• In-App Messaging

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
• 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

---

This change is 

[abdulraqeeb33]

question around cursor/rules and pr-assets checkedi n