MM-15116 Migrate WebHook.SaveIncoming Method to Sync by default (#10663)

* SyncStore: migrate WebHooks.SaveIncoming method to Sync

* MM-15116 Migrates the WebHook.SaveIncoming method to Sync by default

* MM-15116 Migrate Webhook.SaveIncoming to Sync by default - fix minor typo

* MM-15116 Migrate WebHook.SaveIncoming to sync -  update test case

store/storetest/mocks/WebhookStore.go

@@ -307,19 +307,28 @@ func (_m *WebhookStore) PermanentDeleteOutgoingByUser(userId string) store.Store
 }
 
 // SaveIncoming provides a mock function with given fields: webhook
-func (_m *WebhookStore) SaveIncoming(webhook *model.IncomingWebhook) store.StoreChannel {
+func (_m *WebhookStore) SaveIncoming(webhook *model.IncomingWebhook) (*model.IncomingWebhook, *model.AppError) {
 	ret := _m.Called(webhook)
 
-	var r0 store.StoreChannel
-	if rf, ok := ret.Get(0).(func(*model.IncomingWebhook) store.StoreChannel); ok {
+	var r0 *model.IncomingWebhook
+	if rf, ok := ret.Get(0).(func(*model.IncomingWebhook) *model.IncomingWebhook); ok {
 		r0 = rf(webhook)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(store.StoreChannel)
+			r0 = ret.Get(0).(*model.IncomingWebhook)
 		}
 	}
 
-	return r0
+	var r1 *model.AppError
+	if rf, ok := ret.Get(1).(func(*model.IncomingWebhook) *model.AppError); ok {
+		r1 = rf(webhook)
+	} else {
+		if ret.Get(1) != nil {
+			r1 = ret.Get(1).(*model.AppError)
+		}
+	}
+
+	return r0, r1
 }
 
 // SaveOutgoing provides a mock function with given fields: webhook