Merge pull request #11393 from overleaf/bg-history-helper-missing-exports

add missing exports to history-migration module

GitOrigin-RevId: dc1c2f9497ab5f306ba3d0182f2a6dfe37ac671b

services/web/modules/history-migration/app/src/HistoryUpgradeHelper.js

@@ -361,4 +361,7 @@ module.exports = {
   getUpgradeFunctionForType,
   upgradeProject,
   convertLargeDocsToFile,
+  anyDocHistoryExists,
+  anyDocHistoryIndexExists,
+  doUpgradeForNoneWithConversion,
 }