Do not deregister from Application.ThreadException between tests (git…

…extensions#7686)

between tests in order to catch all exceptions during tests
fixes gitextensions#7684

UnitTests/CommonTestUtils/ConfigureJoinableTaskFactoryAttribute.cs

@@ -21,12 +21,15 @@ public sealed class ConfigureJoinableTaskFactoryAttribute : Attribute, ITestActi
 
  public ActionTargets Targets => ActionTargets.Test;
 
+ public ConfigureJoinableTaskFactoryAttribute()
+ {
+ Application.ThreadException += HandleApplicationThreadException;
+ }
+
  public void BeforeTest(ITest test)
  {
  Assert.IsNull(ThreadHelper.JoinableTaskContext, "Tests with joinable tasks must not be run in parallel!");
 
- Application.ThreadException += HandleApplicationThreadException;
-
  IList apartmentState = null;
  for (var scope = test; scope != null; scope = scope.Parent)
  {
@@ -81,8 +84,6 @@ public void AfterTest(ITest test)
  }
  finally
  {
- Application.ThreadException -= HandleApplicationThreadException;
-
  // Reset _threadException to null, and throw if it was set during the current test.
  Interlocked.Exchange(ref _threadException, null)?.Throw();
  }