Publish the Flutter Gradle Plugin AGP public API breaking-change page to docs.flutter.dev and update links to it #193713

The Flutter Gradle Plugin (FGP) AGP public API migration keeps its user-facing breaking-change page as a draft in the flutter/flutter repo: docs/platforms/android/website-page-draft.md. Code and contributor docs link to that draft until the page is published on docs.flutter.dev.

Tasks

• Publish the draft to docs.flutter.dev/release/breaking-changes/ (flutter/website). The draft says this must happen before the newDsl flip reaches the beta channel.
• Replace links to website-page-draft.md with the docs.flutter.dev URL. Known links:
  • packages/flutter_tools/gradle/src/main/kotlin/FlutterPlugin.kt: KDoc of configureSplitPerAbiVersionCodes ("Setting per-ABI or per-variant versionCode"). Added in [AGP 9.1.0 Migration #7] Migrate the flutter-apk copy and per-ABI versionCode to the variant API #193693.
  • docs/platforms/android/Migrating-Flutter-Gradle-Plugin-to-AGP-public-API.md.
• Delete website-page-draft.md, or reduce it to a pointer to the published page.

Related

• newDsl flip umbrella: ☂ Migrate Flutter Android Gradle Plugin to the AGP "newDsl" #180137
• AGP 9.1 / newDsl follow-up work: Agp 9.1 / newdsl follow up work #190964
• Per-ABI versionCode change: [AGP 9.1.0 Migration #7] Migrate the flutter-apk copy and per-ABI versionCode to the variant API #193693