AuthN: Support reloading SSO config after the sso settings have changed (#80734)

* Add AuthNSvc reload handling

* Working, need to add test

* Remove commented out code

* Add Reload implementation to connectors

* Align and add tests, refactor

* Add more tests, linting

* Add extra checks + tests to oauth client

* Clean up based on reviews

* Move config instantiation into newSocialBase

* Use specific error

pkg/services/ssosettings/database/database.go

@@ -84,7 +84,7 @@ func (s *SSOSettingsStore) List(ctx context.Context) ([]*models.SSOSettings, err
 	return result, nil
 }
 
-func (s *SSOSettingsStore) Upsert(ctx context.Context, settings models.SSOSettings) error {
+func (s *SSOSettingsStore) Upsert(ctx context.Context, settings *models.SSOSettings) error {
 	if settings.Provider == "" {
 		return ssosettings.ErrNotFound
 	}
@@ -110,13 +110,10 @@ func (s *SSOSettingsStore) Upsert(ctx context.Context, settings models.SSOSettin
 			}
 			_, err = sess.UseBool(isDeletedColumn).Update(updated, existing)
 		} else {
-			_, err = sess.Insert(&models.SSOSettings{
-				ID:       uuid.New().String(),
-				Provider: settings.Provider,
-				Settings: settings.Settings,
-				Created:  now,
-				Updated:  now,
-			})
+			settings.ID = uuid.New().String()
+			settings.Created = now
+			settings.Updated = now
+			_, err = sess.Insert(settings)
 		}
 
 		return err