refactor: "false" -> CHAOS_DEFAULT

cli/app/rollback.go

@@ -6,6 +6,7 @@ import (
 
 	appPkg "coopcloud.tech/abra/pkg/app"
 	"coopcloud.tech/abra/pkg/autocomplete"
+	"coopcloud.tech/abra/pkg/config"
 	"coopcloud.tech/abra/pkg/envfile"
 	"coopcloud.tech/abra/pkg/lint"
 	stack "coopcloud.tech/abra/pkg/upstream/stack"
@@ -197,7 +198,7 @@ EXAMPLE:
 		appPkg.SetChaosVersionLabel(compose, stackName, chosenDowngrade)
 		appPkg.SetUpdateLabel(compose, stackName, app.Env)
 
-		chaosVersion := "false"
+		chaosVersion := config.CHAOS_DEFAULT
 		if deployMeta.IsChaos {
 			chaosVersion = deployMeta.ChaosVersion
 		}