Fix toolbar of RoomList when using font size 11px

We don't need to use a ToolBar for the titleDelegate since the
titleDelegate is already included inside a toolbar. This work magically
when using the default font size of 10px Noto Sans but breaks with 11px

BUG: 467242

src/qml/Page/RoomList/ExploreComponent.qml

@@ -9,7 +9,7 @@ import org.kde.kirigami 2.15 as Kirigami
 
 import org.kde.neochat 1.0
 
-QQC2.ToolBar {
+RowLayout {
     id: root
 
     property var desiredWidth
@@ -45,19 +45,16 @@ QQC2.ToolBar {
         }
     }
 
-    padding: 0
-
-    RowLayout {
-        id: row
     Kirigami.SearchField {
         Layout.topMargin: Kirigami.Units.smallSpacing
         Layout.bottomMargin: Kirigami.Units.smallSpacing
         Layout.fillWidth: true
-            Layout.preferredWidth: root.desiredWidth ? root.desiredWidth - menuButton.width - row.spacing : -1
+        Layout.preferredWidth: root.desiredWidth ? root.desiredWidth - menuButton.width - root.spacing : -1
         visible: !root.collapsed
         onTextChanged: sortFilterRoomListModel.filterText = text
         KeyNavigation.tab: listView
     }
+
     QQC2.ToolButton {
         id: menuButton
         display: QQC2.AbstractButton.IconOnly
@@ -76,11 +73,11 @@ QQC2.ToolBar {
                 }
             }
         }
+
         QQC2.ToolTip {
             text: parent.text
         }
     }
-    }
 
     Component {
         id: desktopMenu