[FIX] web_editor, test_lint: clean test HTML in utils tests

Test HTML being inserted for the utils tests was not cleaned at the end
of the tests.

X-original-commit: 092cee52b343665ea3ca90e4f4aa302318a763b5
Part-of: odoo/odoo#138549

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

@@ -67,6 +67,8 @@ const insertTestHtml = innerHtml => {
 };
 
 describe('Utils', () => {
+    afterEach(cleanTestHtml);
+
     //------------------------------------------------------------------------------
     // Position and sizes
     //------------------------------------------------------------------------------

odoo/addons/test_lint/tests/eslintrc

@@ -46,6 +46,7 @@
         "chai": "readonly",
         "describe": "readonly",
         "it": "readonly",
+        "afterEach": "readonly",
         "mocha": "readonly",
         "DOMPurify": "readonly"
     }