Update tests to respect html() changes

ee/spec/frontend/geo_designs/components/geo_designs_spec.js

@@ -52,7 +52,7 @@ describe('GeoDesigns', () => {
         });
 
         it('is hidden', () => {
-          expect(findGlPagination().html()).toBeUndefined();
+          expect(findGlPagination().isEmpty()).toBe(true);
         });
       });
 

ee/spec/frontend/vue_mr_widget/components/blocking_merge_requests/blocking_merge_requests_report_spec.js

@@ -51,7 +51,7 @@ describe('BlockingMergeRequestsReport', () => {
     props.mr.blockingMergeRequests.visible_merge_requests = {};
     createComponent(props);
 
-    expect(wrapper.html()).toBeUndefined();
+    expect(wrapper.isEmpty()).toBe(true);
   });
 
   it('passes merged MRs as resolved issues and anything else as unresolved ', () => {

spec/frontend/notes/components/discussion_notes_replies_wrapper_spec.js

@@ -30,7 +30,7 @@ describe('DiscussionNotesRepliesWrapper', () => {
     });
 
     it('renders children directly', () => {
-      expect(wrapper.html()).toEqual(`<ul>${TEST_CHILDREN}</ul>`);
+      expect(wrapper.element.outerHTML).toEqual(`<ul>${TEST_CHILDREN}</ul>`);
     });
   });
 
@@ -45,7 +45,7 @@ describe('DiscussionNotesRepliesWrapper', () => {
       const notes = wrapper.find('li.discussion-collapsible ul.notes');
 
       expect(notes.exists()).toBe(true);
-      expect(notes.html()).toEqual(`<ul class="notes">${TEST_CHILDREN}</ul>`);
+      expect(notes.element.outerHTML).toEqual(`<ul class="notes">${TEST_CHILDREN}</ul>`);
     });
   });
 });