Revert "MM-42810: Introduce a channel hook for a websocket event (#23812)" (#24107)

Automatic Merge

server/channels/app/post_metadata.go

@@ -190,6 +190,18 @@ func (a *App) getEmbedsAndImages(c request.CTX, post *model.Post, isNewPost bool
 	return post
 }
 
+func (a *App) sanitizePostMetadataForUserAndChannel(c request.CTX, post *model.Post, previewedPost *model.PreviewPost, previewedChannel *model.Channel, userID string) *model.Post {
+	if post.Metadata == nil || len(post.Metadata.Embeds) == 0 || previewedPost == nil {
+		return post
+	}
+
+	if previewedChannel != nil && !a.HasPermissionToReadChannel(c, userID, previewedChannel) {
+		post.Metadata.Embeds[0].Data = nil
+	}
+
+	return post
+}
+
 func (a *App) SanitizePostMetadataForUser(c request.CTX, post *model.Post, userID string) (*model.Post, *model.AppError) {
 	if post.Metadata == nil || len(post.Metadata.Embeds) == 0 {
 		return post, nil