Fix resolution of user assignments for active split tests for admin

GitOrigin-RevId: c664d1e2b195313c0f9893cf000c670f22929788

services/web/app/src/Features/SplitTests/SplitTestHandler.js

@@ -366,6 +366,7 @@ function _getCachedVariantFromSession(session, splitTestName, currentVersion) {
 
 async function _getUser(id) {
   return UserGetter.promises.getUser(id, {
+    analyticsId: 1,
     splitTests: 1,
     alphaProgram: 1,
     betaProgram: 1,