Fix UT

Author: serbel324

ydb/core/blobstorage/ut_blobstorage/sanitize_groups.cpp

@@ -61,8 +61,8 @@ Y_UNIT_TEST_SUITE(GroupLayoutSanitizer) {
 
 
         // Assure that sanitizer doesn't send request to initially allocated groups
-        env->UpdateSettings(true, false, true);
         env->Runtime->FilterFunction = CatchSanitizeRequests;
+        env->UpdateSettings(true, false, true);
         env->Sim(TDuration::Minutes(3));
         env->UpdateSettings(false, false, false);