Wait for parsing and syntax highlighting in autocomplete Cypress tests (#33667)

* Wait for parsing and syntax highlighting in autocomplete Cypress tests

* Wait for syntax highlighting in write-and-cite Cypress tests

GitOrigin-RevId: d48f10c864b0a170b4a02e95e3a989fdc4137dbb

services/web/test/frontend/features/source-editor/components/codemirror-editor-autocomplete.spec.tsx

@@ -75,7 +75,7 @@ describe('autocomplete', { scrollBehavior: false }, function () {
 
     cy.get('.cm-editor').as('editor')
 
-    cy.contains('\\section{Results}')
+    cy.get('.tok-keyword') // wait for parsing and syntax highlighting
 
     // no autocomplete
     cy.findAllByRole('listbox').should('have.length', 0)
@@ -222,7 +222,7 @@ describe('autocomplete', { scrollBehavior: false }, function () {
 
     cy.get('.cm-editor').as('editor')
 
-    cy.contains('\\section{Results}')
+    cy.get('.tok-keyword') // wait for parsing and syntax highlighting
 
     // put the cursor on a blank line to type in
     cy.get('.cm-line').eq(16).as('line')
@@ -461,7 +461,7 @@ describe('autocomplete', { scrollBehavior: false }, function () {
 
     cy.get('.cm-editor').as('editor')
 
-    cy.contains('\\section{Results}')
+    cy.get('.tok-keyword') // wait for parsing and syntax highlighting
 
     // no autocomplete
     cy.findAllByRole('listbox').should('have.length', 0)