Fix loading animation (#1852)

Initial loader would stop after a Single iteration.
diff --git a/sample-compose/src/main/java/com/airbnb/lottie/sample/compose/composables/Loader.kt b/sample-compose/src/main/java/com/airbnb/lottie/sample/compose/composables/Loader.kt
index 2d5105f..4cde02f 100644
--- a/sample-compose/src/main/java/com/airbnb/lottie/sample/compose/composables/Loader.kt
+++ b/sample-compose/src/main/java/com/airbnb/lottie/sample/compose/composables/Loader.kt
@@ -7,6 +7,7 @@
 import androidx.compose.ui.unit.dp
 import com.airbnb.lottie.compose.LottieAnimation
 import com.airbnb.lottie.compose.LottieCompositionSpec
+import com.airbnb.lottie.compose.LottieConstants
 import com.airbnb.lottie.compose.rememberLottieComposition
 import com.airbnb.lottie.sample.compose.R
 
@@ -17,7 +18,8 @@
     val composition by rememberLottieComposition(LottieCompositionSpec.RawRes(R.raw.loading))
     LottieAnimation(
         composition,
+        iterations = LottieConstants.IterateForever,
         modifier = modifier
             .size(100.dp)
     )
-}
\ No newline at end of file
+}