fix issue with stepNames being undefined

packages/builder/src/components/automation/AutomationBuilder/FlowChart/FlowItemHeader.svelte

@@ -58,11 +58,13 @@
   }
 
   const getAutomationNameError = name => {
+    if (stepNames) {
       for (const [key, value] of Object.entries(stepNames)) {
         if (name === value && key !== block.id) {
           return "This name already exists, please enter a unique name"
         }
       }
+    }
 
     if (name !== block.name && name?.length > 0) {
       let invalidRoleName = !validRegex.test(name)