Flaky test: when passed unresolved inputs, may fail - Passed only 99 tests

[Anviking]

Please ensure:

• This is actually a flaky test already present in the code and not caused by your PR.

Context

Combination of

        not (null dropped) ==> do

        shouldKeep <- vectorOf (length inputs) $ frequency
            [ (8, pure False)
            , (2, pure True)
            ]

Job name

cardano-wallet-core:unit

Test case name(s)

when passed unresolved inputs, may fail

Error message

test/unit/Cardano/Wallet/Shelley/TransactionSpec.hs:2036:13:
  1) Cardano.Wallet.Shelley.Transaction.balanceTransaction, when passed unresolved inputs, may fail
       *** Gave up! Passed only 99 tests; 5 discarded tests (10% unknown txins).

### Build link

https://hydra.iohk.io/build/13314576

[Anviking]

Should be fixed.