fix: add workaround for missing kraken balance mapping

closes freqtrade#11118

Author: xmatthias

freqtrade/exchange/kraken.py

@@ -70,6 +70,7 @@ def consolidate_balances(self, balances: CcxtBalances) -> CcxtBalances:
         consolidated: CcxtBalances = {}
         for currency, balance in balances.items():
             base_currency = currency[:-2] if currency.endswith(".F") else currency
+            base_currency = self._api.commonCurrencies.get(base_currency, base_currency)
             if base_currency in consolidated:
                 consolidated[base_currency]["free"] += balance["free"]
                 consolidated[base_currency]["used"] += balance["used"]

tests/exchange/test_kraken.py

@@ -128,7 +128,7 @@ def test_get_balances_prod_kraken(default_conf, mocker):
     default_conf["dry_run"] = False
     exchange = get_patched_exchange(mocker, default_conf, api_mock, exchange="kraken")
     balances = exchange.get_balances()
-    assert len(balances) == 8
+    assert len(balances) == 7
 
     assert balances["1ST"]["free"] == 9.0
     assert balances["1ST"]["total"] == 10.0