fix: fixed top bar and added back handler for floating action button

mobile/src/main/java/ru/omni_devel/cards/Elements.kt

@@ -77,6 +77,9 @@ fun Page(
     content: @Composable () -> Unit
 ) {
     Scaffold(
+        topBar = {
+            TopBar(name, innerPadding)
+        },
         floatingActionButton = floatingActionButton
     ) { padding ->
         Box(
@@ -105,6 +108,12 @@ fun ExpandableFab(
 
     val rotation by animateFloatAsState(if (isExpanded) 45f else 0f)
 
+    BackHandler(
+        enabled = isExpanded
+    ) {
+        isExpanded = false
+    }
+
     Column(
         horizontalAlignment = Alignment.End,
         verticalArrangement = Arrangement.spacedBy(8.dp)
@@ -145,7 +154,7 @@ fun ExpandableFab(
 }
 
 @Composable
-fun TopBar(text: String, innerPadding: PaddingValues, openMenuButton: (@Composable () -> Unit)? = null) {
+fun TopBar(text: String, innerPadding: PaddingValues) {
     Row(
         modifier = Modifier
             .fillMaxWidth()
@@ -155,10 +164,6 @@ fun TopBar(text: String, innerPadding: PaddingValues, openMenuButton: (@Composab
         verticalAlignment = Alignment.CenterVertically,
         horizontalArrangement = Arrangement.spacedBy(8.dp)
     ) {
-        if (openMenuButton != null) {
-            openMenuButton()
-        }
-
         Text(
             text,
             modifier = Modifier,