Fix WebinarRecording access check to support M3U8 and MP4

The access check was only checking recording_url and rejecting access when null,
even if m3u8_url or mp4_url existed. Now checks all recording types.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/pages/WebinarRecording.tsx

@@ -78,7 +78,9 @@ export default function WebinarRecording() {
 
     setProduct(productData);
 
-    if (!productData.recording_url) {
+    // Check if any recording exists (YouTube, M3U8, or MP4)
+    const hasRecording = productData.recording_url || productData.m3u8_url || productData.mp4_url;
+    if (!hasRecording) {
       toast({ title: 'Info', description: 'Rekaman webinar belum tersedia', variant: 'destructive' });
       navigate('/dashboard');
       return;