Use a regular FAB for the selection bar's button (#141)

app/src/main/java/de/jeanlucmakiola/calendula/ui/common/EventSelectionBar.kt

@@ -8,6 +8,7 @@ import androidx.compose.material.icons.filled.Edit
 import androidx.compose.material.icons.filled.MoreHoriz
 import androidx.compose.material.icons.filled.Share
 import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.FloatingActionButton
 import androidx.compose.material3.FloatingToolbarDefaults
 import androidx.compose.material3.FloatingToolbarHorizontalFabPosition
 import androidx.compose.material3.HorizontalFloatingToolbar
@@ -41,7 +42,9 @@ fun EventSelectionBar(
     HorizontalFloatingToolbar(
         expanded = expanded,
         floatingActionButton = {
-            FloatingToolbarDefaults.VibrantFloatingActionButton(onClick = onToggle) {
+            // A regular FAB, the size of the one it stands in for — not the
+            // toolbar's own larger one.
+            FloatingActionButton(onClick = onToggle) {
                 Icon(
                     imageVector = if (expanded) {
                         Icons.AutoMirrored.Filled.KeyboardArrowRight
@@ -55,7 +58,7 @@ fun EventSelectionBar(
             }
         },
         floatingActionButtonPosition = FloatingToolbarHorizontalFabPosition.End,
-        colors = FloatingToolbarDefaults.vibrantFloatingToolbarColors(),
+        colors = FloatingToolbarDefaults.standardFloatingToolbarColors(),
         modifier = modifier,
     ) {
         if (canEdit) BarAction(Icons.Default.Edit, R.string.event_detail_edit, onEdit)