fix(quickbooks): keep shared line example valid

Author: Bill Leoutsakos

apps/sim/blocks/blocks/quickbooks.ts

@@ -743,8 +743,7 @@ export const QuickBooksBlock: BlockConfig<QuickBooksResponse> = {
       title: 'Expense Lines (JSON)',
       type: 'code',
       language: 'json',
-      placeholder:
-        '[{"lineType":"account","amount":100,"accountId":"7","description":"Supplies","purchaseOrderId":"123","purchaseOrderLineId":"1"}]',
+      placeholder: '[{"lineType":"account","amount":100,"accountId":"7","description":"Supplies"}]',
       condition: {
         field: 'operation',
         value: [

apps/sim/tools/quickbooks/purchasing.test.ts

@@ -881,6 +881,16 @@ describe('QuickBooks BillPayment account compatibility', () => {
 })
 
 describe('QuickBooks purchasing block', () => {
+  it('keeps the shared purchasing-lines example valid for every supported operation', () => {
+    const subBlock = QuickBooksBlock.subBlocks.find(
+      (candidate) => candidate.id === 'purchasingLines'
+    )
+
+    expect(subBlock?.placeholder).not.toContain('purchaseOrderId')
+    expect(subBlock?.placeholder).not.toContain('purchaseOrderLineId')
+    expect(subBlock?.wandConfig?.prompt).toContain('For Create Bill only')
+  })
+
   it('does not force array-valued wand prompts through JSON-object generation', () => {
     for (const id of ['purchasingLines', 'billAllocations']) {
       const subBlock = QuickBooksBlock.subBlocks.find((candidate) => candidate.id === id)