chore: fix test case (backport #40457)

[mergify]

Issue

test_repost_item_valuation_for_closing_stock_balance (erpnext.stock.doctype.repost_item_valuation.test_repost_item_valuation.TestRepostItemValuation.test_repost_item_valuation_for_closing_stock_balance)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/runner/frappe-bench/apps/erpnext/erpnext/stock/doctype/repost_item_valuation/test_repost_item_valuation.py", line 408, in test_repost_item_valuation_for_closing_stock_balance
    self.assertEqual(doc.status, "Completed")
    doc = <ClosingStockBalance: CBAL-00001 docstatus=1>
    prepare_closing_stock_balance = <function prepare_closing_stock_balance at 0x72d329626480>
    self = <erpnext.stock.doctype.repost_item_valuation.test_repost_item_valuation.TestRepostItemValuation testMethod=test_repost_item_valuation_for_closing_stock_balance>
AssertionError: 'Failed' != 'Completed'
- Failed
+ Completed
```<hr>This is an automatic backport of pull request #40457 done by [Mergify](https://mergify.com).

[frappe-pr-bot]

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