MM 16523 Migrate "LinkMetadata.Save" to Sync by default (#11416)

* Update LinkMetadata.Save store and interface

* Update mocks with make store-mocks

* Update tests and implementation

store/storetest/mocks/LinkMetadataStore.go

@@ -6,7 +6,6 @@ package mocks
 
 import mock "github.com/stretchr/testify/mock"
 import model "github.com/mattermost/mattermost-server/model"
-import store "github.com/mattermost/mattermost-server/store"
 
 // LinkMetadataStore is an autogenerated mock type for the LinkMetadataStore type
 type LinkMetadataStore struct {
@@ -39,17 +38,26 @@ func (_m *LinkMetadataStore) Get(url string, timestamp int64) (*model.LinkMetada
 }
 
 // Save provides a mock function with given fields: linkMetadata
-func (_m *LinkMetadataStore) Save(linkMetadata *model.LinkMetadata) store.StoreChannel {
+func (_m *LinkMetadataStore) Save(linkMetadata *model.LinkMetadata) (*model.LinkMetadata, *model.AppError) {
 	ret := _m.Called(linkMetadata)
 
-	var r0 store.StoreChannel
-	if rf, ok := ret.Get(0).(func(*model.LinkMetadata) store.StoreChannel); ok {
+	var r0 *model.LinkMetadata
+	if rf, ok := ret.Get(0).(func(*model.LinkMetadata) *model.LinkMetadata); ok {
 		r0 = rf(linkMetadata)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(store.StoreChannel)
+			r0 = ret.Get(0).(*model.LinkMetadata)
 		}
 	}
 
-	return r0
+	var r1 *model.AppError
+	if rf, ok := ret.Get(1).(func(*model.LinkMetadata) *model.AppError); ok {
+		r1 = rf(linkMetadata)
+	} else {
+		if ret.Get(1) != nil {
+			r1 = ret.Get(1).(*model.AppError)
+		}
+	}
+
+	return r0, r1
 }