Handle missing projects properly in file-count script

GitOrigin-RevId: 5968fc3c6646a6e75b2b84440d59d9c0cbcead5e

services/web/scripts/count_files_in_projects.js

@@ -11,6 +11,9 @@ async function countFiles() {
   for await (const projectId of rl) {
     try {
       const project = await ProjectGetter.promises.getProject(projectId)
+      if (!project) {
+        throw new Errors.NotFoundError('project not found')
+      }
       const {
         files,
         docs