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Bug: List mutation operations do not update error state in @mantine/form

Bug: List mutation operations do not update error state in @mantine/form: a task in LegoFlow-SWE (Harbor dataset). When using list operations ( reorderListItem , removeListItem , insertListItem ) on a form with validation errors on nested list items, the error state is not updated to reflect the…

The task

When using list operations (`reorderListItem`, `removeListItem`, `insertListItem`) on a form with validation errors on nested list items, the error state is not updated to reflect the new list structure. Errors remain at their original indices, causing validation messages to appear on incorrect items.

Part of Lego-X/LegoFlow-SWE.