Merge pull request #17127 from overleaf/jdt-wf-loader-tests

Writefull Loader and Writefull promotion tests

GitOrigin-RevId: d21715f575e4dde2e44ad9bd2120464e745e1fc8

services/web/cypress/fixtures/build/mock-writefull-api.js

@@ -0,0 +1 @@
+module.exports = {}

services/web/types/window.ts

@@ -52,6 +52,7 @@ declare global {
     writefull?: {
       type: 'extension' | 'integration'
     }
+    WritefullStub?: any
     io?: any
     overleaf: {
       unstable: {