Use new scrollbars for scrollviews (ie text areas)

src/gui/Base/HScrollView.qml

@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
+
+import QtQuick 2.12
+import QtQuick.Controls 2.12
+
+ScrollView {
+    id: scrollView
+
+    ScrollBar.vertical: HScrollBar {
+        parent: scrollView
+        x: scrollView.mirrored ? 0 : scrollView.width - width
+        y: scrollView.topPadding
+        height: scrollView.availableHeight
+        active: scrollView.ScrollBar.horizontal.active
+    }
+}