app: release Hilt wiring of :data (pre-M8)

AppBuildInfo from BuildConfig for both variants (buildConfig enabled); the
release source set includes DataBindingsModule (D-041), so features'
@HiltViewModels resolve in release as they do against the debug fakes.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TQd3pEP9UeN2uifbHknQ7B

android/app/build.gradle.kts

@@ -14,6 +14,10 @@ android {
         versionCode = providers.gradleProperty("kvitt.versionCode").orElse("1").get().toInt()
         versionName = providers.gradleProperty("kvitt.versionName").orElse("dev").get()
     }
+    // BuildConfig carries versionCode, versionName and DEBUG into AppBuildInfo (:data, D-041).
+    buildFeatures {
+        buildConfig = true
+    }
     buildTypes {
         debug {
             applicationIdSuffix = ".debug"