cleanup error tests state

Author: YunchuWang

client/src/test/java/com/microsoft/durabletask/ErrorHandlingIntegrationTests.java

@@ -24,6 +24,12 @@
  */
 @Tag("integration")
 public class ErrorHandlingIntegrationTests extends IntegrationTestBase {
+    @BeforeEach
+    private void startUp() {
+        DurableTaskClient client = new DurableTaskGrpcClientBuilder().build();
+        client.deleteTaskHub();
+    }
+
     @Test
     void orchestratorException() throws TimeoutException {
         final String orchestratorName = "OrchestratorWithException";