MC-3903: Clicking into live edit shouldn't focus all text if existing text is present

- enable selectAll text for Tabs

Author: anthoula

app/code/Magento/PageBuilder/view/adminhtml/web/template/content-type/tabs/default/preview.html

@@ -20,7 +20,7 @@
                     <a href="#no-tab" class="tab-title focus-options" attr="{ href: '#' + parent.id }">
                         <render args="getOptions().template" />
                         <span class="tab-drag-handle" css="{disabled: parent.parent.children().length <= 1}"></span>
-                        <span class="tab-title tab-name" data-tab-title="true" data-bind="liveEdit: { field: 'tab_name', placeholder: $t('...') }, hasFocusNoScroll: parent.parent.preview.focusedTab() === $index()"></span>
+                        <span class="tab-title tab-name" data-tab-title="true" data-bind="liveEdit: { field: 'tab_name', placeholder: $t('...'), selectAll: true }, hasFocusNoScroll: parent.parent.preview.focusedTab() === $index()"></span>
                     </a>
                 </li>
             </with>