fix tests

Author: billyvg

packages/replay/src/coreHandlers/util/getAttributesToRecord.ts

@@ -1,4 +1,5 @@
-// Attributes we are interested in:
+// Note that these are the serialized attributes and not attributes directly on
+// the DOM Node. Attributes we are interested in:
 const ATTRIBUTES_TO_RECORD = new Set([
   'id',
   'class',

packages/replay/test/unit/coreHandlers/util/getAttributesToRecord.test.ts

@@ -4,23 +4,23 @@ it('records only included attributes', function () {
   expect(
     getAttributesToRecord({
       id: 'foo',
-      classList: ['btn', 'btn-primary'],
+      class: 'btn btn-primary',
     }),
   ).toEqual({
     id: 'foo',
-    classList: ['btn', 'btn-primary'],
+    class: 'btn btn-primary',
   });
 
   expect(
     getAttributesToRecord({
       id: 'foo',
-      classList: ['btn', 'btn-primary'],
+      class: 'btn btn-primary',
       tabIndex: 2,
       ariaDescribedBy: 'tooltip-1',
     }),
   ).toEqual({
     id: 'foo',
-    classList: ['btn', 'btn-primary'],
+    class: 'btn btn-primary',
   });
 
   expect(