[FIX] web_editor: ensure t-out are inline

Force the sanitization after a dynamic placeholder is inserted.
By default the `<t>` tags are styled as block element,
except if they have the `data-oe-t-inline` attribute set.
The sanitization process ensure the `<t>` tags have this attribute.

With this change the new `<t t-out >` tags added as dynamic placeholder visual
are properly styled as inline elements.

task-3222474

X-original-commit: 08558502ea0726a97c80aae7d1e2084b2bf3952a
Part-of: odoo/odoo#124020

addons/web_editor/static/src/js/backend/html_field.js

@@ -373,6 +373,8 @@ export class HtmlField extends Component {
             const t = document.createElement('T');
             t.setAttribute('t-out', dynamicPlaceholder);
             this.wysiwyg.odooEditor.execCommand('insert', t);
+            // Ensure the dynamic placeholder <t> element is sanitized.
+            this.wysiwyg.odooEditor.sanitize(t);
         }
     }
     onDynamicPlaceholderClose() {