test: update bitget test for lev_prep adjustment

Author: xmatthias

tests/exchange/test_bitget.py

@@ -218,15 +218,15 @@ def test__lev_prep_bitget(default_conf, mocker):
     exchange = get_patched_exchange(mocker, default_conf, api_mock, exchange="bitget")
     exchange._lev_prep("BTC/USDC:USDC", 3.2, "buy")
 
-    assert api_mock.set_margin_mode.call_count == 0
+    assert api_mock.set_margin_mode.call_count == 1
     assert api_mock.set_leverage.call_count == 1
     api_mock.set_leverage.assert_called_with(symbol="BTC/USDC:USDC", leverage=3.2)
 
     api_mock.reset_mock()
 
     exchange._lev_prep("BTC/USDC:USDC", 19.99, "sell")
 
-    assert api_mock.set_margin_mode.call_count == 0
+    assert api_mock.set_margin_mode.call_count == 1
     assert api_mock.set_leverage.call_count == 1
     api_mock.set_leverage.assert_called_with(symbol="BTC/USDC:USDC", leverage=19.99)