fix(workflows): preserve absent loop count fields (#7845)

Author: waleedlatif1

apps/sim/lib/workflows/persistence/utils.test.ts

@@ -413,6 +413,7 @@ describe('Database Helpers', () => {
       const loaded = await dbHelpers.loadWorkflowFromNormalizedTables(mockWorkflowId)
 
       expect(loaded?.blocks['loop-1'].data?.count).toBeUndefined()
+      expect(Object.hasOwn(loaded!.blocks['loop-1'].data!, 'count')).toBe(false)
       expect(loaded?.loops['loop-1'].iterations).toBe(3)
       expect(generateLoopBlocks(loaded!.blocks)['loop-1'].iterations).toBe(5)
       expect(dbChainMockFns.update).not.toHaveBeenCalled()

packages/workflow-persistence/src/load.ts

@@ -205,10 +205,9 @@ export async function loadWorkflowFromNormalizedTablesRaw(
             data: {
               ...block.data,
               /** Repair legacy values without changing valid counts used by serialization. */
-              count:
-                block.data?.count === undefined || typeof block.data.count === 'number'
-                  ? block.data?.count
-                  : loop.iterations,
+              ...(block.data?.count !== undefined && typeof block.data.count !== 'number'
+                ? { count: loop.iterations }
+                : {}),
               collection: loop.forEachItems ?? block.data?.collection ?? '',
               whileCondition: loop.whileCondition ?? block.data?.whileCondition ?? '',
               doWhileCondition: loop.doWhileCondition ?? block.data?.doWhileCondition ?? '',