Add unbounded ripple effect on `AuthorItem`

feature-foryou/src/main/java/com/google/samples/apps/nowinandroid/feature/foryou/AuthorsCarousel.kt

@@ -16,8 +16,11 @@
 
 package com.google.samples.apps.nowinandroid.feature.foryou
 
+import androidx.compose.foundation.interaction.MutableInteractionSource
+import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
@@ -27,10 +30,12 @@ import androidx.compose.foundation.lazy.LazyRow
 import androidx.compose.foundation.lazy.items
 import androidx.compose.foundation.selection.toggleable
 import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material.ripple.rememberRipple
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
@@ -90,6 +95,8 @@ fun AuthorItem(
                 value = following,
                 enabled = true,
                 role = Role.Button,
+                interactionSource = remember { MutableInteractionSource() },
+                indication = rememberRipple(bounded = false),
                 onValueChange = { newFollowing -> onAuthorClick(newFollowing) },
             )
             .sizeIn(maxWidth = 48.dp)