Merge pull request #22492 from overleaf/msm-fix-flaky-e2e-jpg-preview

[SP] Wait for document being rendered before editor tests

GitOrigin-RevId: 4afa9b7d225ff19e6c10b061de4eef076bcd9a5d

server-ce/test/editor.spec.ts

@@ -187,6 +187,7 @@ describe('editor', () => {
       createProject(`project-${uuid()}`, { type: 'Example Project' })
       // wait until the main document is rendered
       cy.findByText(/Loading/).should('not.exist')
+      cy.findByText(/Your Paper/)
     })
 
     it('renders jpg', () => {