Tiptap RTE: Clear Formatting, resets nodes to "paragraph" (#19781)

Fixes #19752

Author: leekelleher

src/Umbraco.Web.UI.Client/src/packages/tiptap/extensions/toolbar/clear-formatting.tiptap-toolbar-api.ts

@@ -3,6 +3,6 @@ import type { Editor } from '@umbraco-cms/backoffice/external/tiptap';
 
 export default class UmbTiptapToolbarClearFormattingExtensionApi extends UmbTiptapToolbarElementApiBase {
 	override execute(editor?: Editor) {
-		editor?.chain().focus().unsetAllMarks().unsetClassName().unsetStyles().run();
+		editor?.chain().focus().clearNodes().unsetAllMarks().unsetClassName().unsetStyles().run();
 	}
 }