Fix the AOSP (Soong) build: library wiring and API 36 skew

- Android.bp: pull in coil-compose from prebuilts/application_libs and a
  Soong-only BuildConfig stub under soong-stubs/ (Gradle generates its own,
  so the stub stays out of the Gradle source set).
- onNewIntent takes a non-null Intent on API 36.
- Region/Locale wizard pages: the screens report the chosen value to their
  onContinue callback; the wizard only advances, so adapt the lambda.
- SetupCompleteScreen: drawContent() needs the explicit drawWithContent
  receiver inside clipPath since the Compose receiver-scoping change.

Android.bp

@@ -10,7 +10,11 @@ android_library_import {
 android_app {
     name: "PawletSetupWizard",
 
-    srcs: ["app/src/main/java/**/*.kt"],
+    srcs: [
+        "app/src/main/java/**/*.kt",
+        // Soong-only BuildConfig stand-in (Gradle generates its own).
+        "soong-stubs/**/*.kt",
+    ],
 
     resource_dirs: ["app/src/main/res"],
 
@@ -63,10 +67,9 @@ android_app {
 
         // Device info library (local prebuilt)
         "android-device-info",
-    ],
 
-    // OkHttp and Coil are not available as AOSP static_libs.
-    // Add them as android_library_import entries pointing to AARs in app/libs/
-    // once prebuilts are sourced from the Gradle dependency cache.
-    // See: https://git.oxmc.me/PawletOS/android_packages_apps_SetupWizard
+        // Images — prebuilts/application_libs/coil (pulls okhttp3/okio/
+        // coroutines transitively via the import's static_libs)
+        "coil-compose",
+    ],
 }