MM-14558 Downgrade warnings printed by post metadata to be debug messages (#10445)

* MM-14558 Downgrade warnings printed by post metadata to be debug messages

* Revert log level for some post metadata messages

app/post_metadata.go

@@ -82,7 +82,7 @@ func (a *App) PreparePostForClient(originalPost *model.Post, isNewPost bool) *mo
 	firstLink, images := getFirstLinkAndImages(post.Message)
 
 	if embed, err := a.getEmbedForPost(post, firstLink, isNewPost); err != nil {
-		mlog.Warn("Failed to get embedded content for a post", mlog.String("post_id", post.Id), mlog.Any("err", err))
+		mlog.Debug("Failed to get embedded content for a post", mlog.String("post_id", post.Id), mlog.Any("err", err))
 	} else if embed == nil {
 		post.Metadata.Embeds = []*model.PostEmbed{}
 	} else {
@@ -201,7 +201,7 @@ func (a *App) getImagesForPost(post *model.Post, imageURLs []string, isNewPost b
 
 	for _, imageURL := range imageURLs {
 		if _, image, err := a.getLinkMetadata(imageURL, post.CreateAt, isNewPost); err != nil {
-			mlog.Warn("Failed to get dimensions of an image in a post",
+			mlog.Debug("Failed to get dimensions of an image in a post",
 				mlog.String("post_id", post.Id), mlog.String("image_url", imageURL), mlog.Any("err", err))
 		} else if image != nil {
 			images[imageURL] = image