[BUGFIX] Add missing title attribute to icons in page tree icon toolbar

This patch re-adds the `title` attribute to the icons in the icon
toolbar above the page tree.

Resolves: #106529
Releases: main, 13.4
Change-Id: I46a43825b1458b9c5e616393e4b360e4b408cac5
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/88996
Tested-by: Garvin Hicking <gh@faktor-e.de>
Tested-by: Simon Schaufelberger <simonschaufi+typo3@gmail.com>
Tested-by: Andreas Kienast <akienast@scripting-base.de>
Reviewed-by: Andreas Kienast <akienast@scripting-base.de>
Reviewed-by: Simon Schaufelberger <simonschaufi+typo3@gmail.com>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Benjamin Kott <benjamin.kott@outlook.com>
Tested-by: Benjamin Kott <benjamin.kott@outlook.com>
Reviewed-by: Garvin Hicking <gh@faktor-e.de>

Author: andreaskienast

Build/Sources/TypeScript/backend/tree/page-tree-element.ts

@@ -492,6 +492,7 @@ class PageTreeToolbar extends TreeToolbar {
           return html`
                 <div
                   class="tree-toolbar__menuitem tree-toolbar__drag-node"
+                  title="${item.title}"
                   draggable="true"
                   data-tree-icon="${item.icon}"
                   data-node-type="${item.nodeType}"