Backport #169 into v3 branch

Author: koenbeuk

src/EntityFrameworkCore.Triggered/Internal/TriggerSessionSaveChangesInterceptor.cs

@@ -90,6 +90,12 @@ public InterceptionResult<int> SavingChanges(DbContextEventData eventData, Inter
                     _triggerSession.CaptureDiscoveredChanges();
                     _triggerSession.RaiseBeforeSaveCompletedTriggers().GetAwaiter().GetResult();
                 }
+                catch
+                {
+                    // We're aborting the SaveChanges call, delist the trigger session now
+                    DelistTriggerSession(eventData);
+                    throw;
+                }
                 finally
                 {
                     eventData.Context.ChangeTracker.AutoDetectChangesEnabled = defaultAutoDetectChangesEnabled;
@@ -119,6 +125,12 @@ public async ValueTask<InterceptionResult<int>> SavingChangesAsync(DbContextEven
                     _triggerSession.CaptureDiscoveredChanges();
                     await _triggerSession.RaiseBeforeSaveCompletedTriggers(cancellationToken).ConfigureAwait(false);
                 }
+                catch
+                {
+                    // We're aborting the SaveChanges call, delist the trigger session now
+                    DelistTriggerSession(eventData);
+                    throw;
+                }
                 finally
                 {
                     eventData.Context.ChangeTracker.AutoDetectChangesEnabled = defaultAutoDetectChangesEnabled;