fix(TokenSelector): fix sections and empty search result

- do not display sections with an active search
- display a "No assets found text" when the search yields no results

ui/app/AppLayouts/Wallet/controls/TokenSelector.qml

@@ -124,7 +124,6 @@ ComboBox {
         }
         StatusDialogDivider {
             Layout.fillWidth: true
-            visible: listview.count
         }
         StatusListView {
             id: listview
@@ -136,7 +135,7 @@ ComboBox {
             model: root.popup.visible ? root.delegateModel : null
             currentIndex: root.highlightedIndex
 
-            section.property: "sectionName"
+            section.property: searchBox.text === "" ? "sectionName" : ""
             section.delegate: StatusBaseText {
                 required property string section
                 width: parent.width
@@ -146,6 +145,17 @@ ComboBox {
                 padding: Style.current.padding
             }
         }
+        StatusBaseText {
+            Layout.fillWidth: true
+            Layout.preferredHeight: 60
+            Layout.alignment: Qt.AlignCenter
+            horizontalAlignment: Text.AlignHCenter
+            verticalAlignment: Text.AlignVCenter
+            visible: listview.count === 0
+            color: Theme.palette.baseColor1
+
+            text: qsTr("No assets found")
+        }
     }
 
     background: StatusComboboxBackground {