Fix warnings on changed files

- Redundant suppression
- UnstableApiUsage
- There is more than one label with such a name in this scope.

build-logic/convention/src/main/kotlin/AndroidApplicationConventionPlugin.kt

@@ -37,7 +37,6 @@ class AndroidApplicationConventionPlugin : Plugin<Project> {
             extensions.configure<ApplicationExtension> {
                 configureKotlinAndroid(this)
                 defaultConfig.targetSdk = 36
-                @Suppress("UnstableApiUsage")
                 testOptions.animationsDisabled = true
                 configureGradleManagedDevices(this)
             }

build-logic/convention/src/main/kotlin/com/google/samples/apps/nowinandroid/AndroidCompose.kt

@@ -46,6 +46,7 @@ internal fun Project.configureAndroidCompose(
     extensions.configure<ComposeCompilerGradlePluginExtension> {
         fun Provider<String>.onlyIfTrue() = flatMap { provider { it.takeIf(String::toBoolean) } }
         fun Provider<*>.relativeToRootProject(dir: String) = map {
+            @Suppress("UnstableApiUsage")
             isolated.rootProject.projectDirectory
                 .dir("build")
                 .dir(projectDir.toRelativeString(rootDir))
@@ -59,6 +60,7 @@ internal fun Project.configureAndroidCompose(
             .relativeToRootProject("compose-reports")
             .let(reportsDestination::set)
 
+        @Suppress("UnstableApiUsage")
         stabilityConfigurationFiles
             .add(isolated.rootProject.projectDirectory.file("compose_compiler_config.conf"))
     }

build-logic/convention/src/main/kotlin/com/google/samples/apps/nowinandroid/GradleManagedDevices.kt

@@ -36,6 +36,7 @@ internal fun configureGradleManagedDevices(
 
 
     commonExtension.testOptions.apply {
+        @Suppress("UnstableApiUsage")
         managedDevices {
             allDevices {
                 allDevices.forEach { deviceConfig ->

build-logic/convention/src/main/kotlin/com/google/samples/apps/nowinandroid/NiaFlavor.kt

@@ -28,12 +28,12 @@ fun configureFlavors(
             flavorDimensions += flavorDimension.name
         }
 
-        productFlavors.apply {
+        productFlavors.apply flavors@{
             NiaFlavor.values().forEach { niaFlavor ->
                 register(niaFlavor.name) {
                     dimension = niaFlavor.dimension.name
                     flavorConfigurationBlock(this, niaFlavor)
-                    if (this@apply is ApplicationExtension && this is ApplicationProductFlavor) {
+                    if (this@flavors is ApplicationExtension && this is ApplicationProductFlavor) {
                         if (niaFlavor.applicationIdSuffix != null) {
                             applicationIdSuffix = niaFlavor.applicationIdSuffix
                         }