fix: safely handle non-Error thrown values in StoreBackend#418

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chaoliang yan (lawrence3699) wants to merge 1 commit intolangchain-ai:mainfrom

lawrence3699:fix/safe-error-handling-in-store-backend

Commits on Apr 2, 2026

fix: use type-safe error handling in store backend catch blocks
chaoliang yan (lawrence3699)
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