Using nullable onClick to avoid passing a new parameter

libraries/matrixui/src/main/kotlin/io/element/android/libraries/matrix/ui/components/CheckableMatrixUserRow.kt

@@ -53,7 +53,6 @@ fun CheckableMatrixUserRow(
             modifier = Modifier.weight(1f),
             matrixUser = matrixUser,
             avatarSize = avatarSize,
-            isClickEnabled = false,
         )
 
         Checkbox(

libraries/matrixui/src/main/kotlin/io/element/android/libraries/matrix/ui/components/MatrixUserRow.kt

@@ -45,12 +45,11 @@ fun MatrixUserRow(
     matrixUser: MatrixUser,
     modifier: Modifier = Modifier,
     avatarSize: AvatarSize = matrixUser.avatarData.size,
-    isClickEnabled: Boolean = true,
-    onClick: () -> Unit = {},
+    onClick: (() -> Unit)? = null,
 ) {
     Row(
         modifier = modifier
-            .let { if (isClickEnabled) it.clickable(onClick = onClick) else it }
+            .let { if (onClick != null) it.clickable(onClick = onClick) else it }
             .padding(start = 16.dp, top = 8.dp, end = 16.dp, bottom = 8.dp)
             .height(IntrinsicSize.Min),
         verticalAlignment = Alignment.CenterVertically