Update video details for editing and saving

Modify the video editing modal to use a PATCH request with JSON body for updating video details via the API.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 11420304-80a9-4ef2-adff-cbdaa418ffa8
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/8cc42625-c1f5-4e43-99bd-77f2c4dedee2/11420304-80a9-4ef2-adff-cbdaa418ffa8/YNIJhSt

client/src/components/video-edit-modal.tsx

@@ -30,10 +30,8 @@ export default function VideoEditModal({ video, isOpen, onClose }: VideoEditModa
 
   const updateVideoMutation = useMutation({
     mutationFn: async (updates: UpdateVideo) => {
-      return apiRequest(`/api/videos/${video.id}`, {
-        method: "PATCH",
-        body: updates
-      });
+      const response = await apiRequest("PATCH", `/api/videos/${video.id}`, updates);
+      return response.json();
     },
     onSuccess: () => {
       toast({ title: "Video uspešno posodobljen!" });