Merge pull request #19790 from overleaf/jpa-silence-missing

[project-history] silence warning due to missing web hash

GitOrigin-RevId: 04ff878c1b356333ff9d515af6a5cba8b31a1ff2

services/project-history/app/js/HistoryStoreManager.js

@@ -317,7 +317,7 @@ export function createBlobForUpdate(projectId, historyId, update, callback) {
             if (err) {
               return callback(err)
             }
-            if (update.hash !== fileHash) {
+            if (update.hash && update.hash !== fileHash) {
               logger.warn(
                 { projectId, fileId, webHash: update.hash, fileHash },
                 'hash mismatch between web and project-history'