fix: add teardown_sqlalchemy to RunTestBase to prevent stale DB on Windows

RunTestBase.tearDown() was calling shutil.rmtree with ignore_errors=True
but without first releasing the SQLite file lock via teardown_sqlalchemy().
On Windows, this left the database file behind, causing the next test
to find a stale BITVAVO portfolio when expecting BINANCE.

Author: MDUYN

tests/app/test_run.py

@@ -15,6 +15,8 @@
 from investing_algorithm_framework import create_app, TradingStrategy, \
     TimeUnit, PortfolioConfiguration, RESOURCE_DIRECTORY, \
     Algorithm, MarketCredential
+from investing_algorithm_framework.infrastructure.database import \
+    teardown_sqlalchemy
 from tests.resources import random_string, OrderExecutorTest, \
     PortfolioProviderTest
 
@@ -105,6 +107,7 @@ def setUp(self) -> None:
 
     def tearDown(self) -> None:
         super().tearDown()
+        teardown_sqlalchemy()
         for subdir in ("databases", "backtest_databases"):
             path = os.path.join(self.resource_dir, subdir)
             if os.path.exists(path):