fix test

Author: Vikhyath Mondreti

apps/sim/lib/workflows/db-helpers.test.ts

@@ -552,12 +552,12 @@ describe('Database Helpers', () => {
         workflowId: mockWorkflowId,
         type: 'starter',
         name: 'Start Block',
-        positionX: 100,
-        positionY: 100,
+        positionX: '100',
+        positionY: '100',
         enabled: true,
         horizontalHandles: true,
         isWide: false,
-        height: 150,
+        height: '150',
         parentId: null,
         extent: null,
       })