enabling the splash carousel feature by default

changelog.d/4584.feature

@@ -0,0 +1 @@
+Enables the FTUE splash carousel

vector/src/main/java/im/vector/app/features/VectorFeatures.kt

@@ -35,6 +35,6 @@ interface VectorFeatures {
 class DefaultVectorFeatures : VectorFeatures {
     override fun onboardingVariant(): VectorFeatures.OnboardingVariant = BuildConfig.ONBOARDING_VARIANT
     override fun isOnboardingAlreadyHaveAccountSplashEnabled() = true
-    override fun isOnboardingSplashCarouselEnabled() = false
+    override fun isOnboardingSplashCarouselEnabled() = true
     override fun isOnboardingUseCaseEnabled() = false
 }