MM-13917 Enable post metadata by default (#10210)

app/post_metadata.go

@@ -56,7 +56,7 @@ func (a *App) PreparePostForClient(originalPost *model.Post, isNewPost bool) *mo
 	// Proxy image links before constructing metadata so that requests go through the proxy
 	post = a.PostWithProxyAddedToImageURLs(post)
 
-	if !*a.Config().ExperimentalSettings.EnablePostMetadata {
+	if *a.Config().ExperimentalSettings.DisablePostMetadata {
 		return post
 	}