[IMP] web_editor: add label to prepareUpdate

This adds a label to the prepareUpdate function to be able to easily
track which update is being restored when debugging.

X-original-commit: 5bb8a5a9b5d54ebe93c473087981e3464cd61368
Part-of: odoo/odoo#138549

addons/web_editor/static/src/js/editor/odoo-editor/src/OdooEditor.js

@@ -2082,7 +2082,10 @@ export class OdooEditor extends EventTarget {
             splitTextNode(start, startOffset);
             startOffset = 0;
         }
-        const restoreUpdate = prepareUpdate(...boundariesOut(start).slice(0, 2), ...boundariesOut(end).slice(2, 4), { allowReenter: false });
+        const restoreUpdate = prepareUpdate(
+            ...boundariesOut(start).slice(0, 2),
+            ...boundariesOut(end).slice(2, 4),
+            { allowReenter: false, label: 'deleteRange' });
 
         // Let the DOM split and delete the range.
         const contents = range.extractContents();

addons/web_editor/static/src/js/editor/odoo-editor/src/utils/utils.js

@@ -2080,13 +2080,16 @@ const prepareUpdateLockedEditables = new Set();
  * @param {Object} [options]
  * @param {boolean} [options.allowReenter = true] - if false, all calls to
  *     prepareUpdate before this one gets restored will be ignored.
+ * @param {string} [options.label = <random 6 character string>]
  * @returns {function}
  */
 export function prepareUpdate(...args) {
     const closestRoot = args.length && ancestors(args[0]).find(ancestor => ancestor.oid === 'root');
     const isPrepareUpdateLocked = closestRoot && prepareUpdateLockedEditables.has(closestRoot);
+    const hash = (Math.random() + 1).toString(36).substring(7);
     const options = {
         allowReenter: true,
+        label: hash,
         ...(args.length && args[args.length - 1] instanceof Object ? args.pop() : {}),
     };
     if (isPrepareUpdateLocked) {