Fix schematracker e2e test for downgrade test

Signed-off-by: Rohit Nayak <[email protected]>

Author: rohit-nayak-ps

go/test/endtoend/vtgate/schematracker/unsharded/st_unsharded_test.go

@@ -91,7 +91,7 @@ func TestMain(m *testing.M) {
 
 		// Start vtgate
 		clusterInstance.VtGateExtraArgs = []string{vtutils.GetFlagVariantForTestsByVersion("--schema-change-signal", vtgateVer),
-			"--vschema-ddl-authorized-users", "%"}
+			vtutils.GetFlagVariantForTestsByVersion("--vschema-ddl-authorized-users", vtgateVer), "%"}
 		err = clusterInstance.StartVtgate()
 		if err != nil {
 			return 1