Merge #2455

2455: waitForTxImmutability in fixtureWalletWith r=Anviking a=Anviking

# Issue Number

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Hopefully fixes all of #2426, #2430, #2439 

# Overview

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- [x] Add waitForTxImmutability in fixtureWalletWith 


# Comments

```
I hope this should fix the flaky TRANS_LIST failures.

I tested locally with setup:
- anviking/prototype/lsq-monad
- patch adding replicateM_ on TRANS_LIST failuries
- patch removing retrying `it`
-  running stack test cardano-wallet:integration --ta '-j 6'

With resulting failures:
without 5s threadDelay:
- 1 (TRANS_LIST) failure
- 1 (TRANS_LIST) failure
with threadDelay:
- 1 (other failure)
- 0 failures

on master, with waitForTxImmutability instead of threadDelay
- 0 failures
```

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Co-authored-by: Johannes Lund <johannes.lund@iohk.io>

lib/core-integration/src/Test/Integration/Framework/DSL.hs

@@ -1360,6 +1360,7 @@ fixtureWalletWith ctx coins0 = do
     liftIO $ mapM_ (moveCoins src dest) (groupsOf 10 coins0)
     liftIO $ void $ request @() ctx
         (Link.deleteWallet @'Shelley src) Default Empty
+    waitForTxImmutability ctx
     snd <$> unsafeRequest @ApiWallet ctx
         (Link.getWallet @'Shelley dest) Empty
   where