Merge pull request #18252 from overleaf/jpa-refactor-for-flaky-test

[web] refactor background job for setting root doc automatically

GitOrigin-RevId: 719c010eb3e5b692908b7a6fea9d8522b9fc01b9

services/web/test/unit/src/Project/ProjectRootDocManagerTests.js

@@ -47,6 +47,12 @@ describe('ProjectRootDocManager', function () {
         './ProjectEntityHandler': (this.ProjectEntityHandler = {}),
         './ProjectEntityUpdateHandler': (this.ProjectEntityUpdateHandler = {}),
         './ProjectGetter': (this.ProjectGetter = {}),
+        '../../infrastructure/GracefulShutdown': {
+          BackgroundTaskTracker: class {
+            add() {}
+            done() {}
+          },
+        },
         globby: this.globby,
         fs: this.fs,
       },