Fix StreamInfo.ToUrl: restore plain key=value for StreamOptions

The previous (wrong) change encoded options as streamOptions[key]=value.
ParseStreamOptions reads IQueryCollection verbatim, so the key would be
stored as "streamOptions[crtShader]" instead of "crtShader", breaking
TryGetValue("crtShader"). Restore the original plain format so the
server-side lookup works correctly.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

MediaBrowser.Model/Dlna/StreamInfo.cs

@@ -1122,7 +1122,9 @@ public class StreamInfo
 
         foreach (var pair in StreamOptions)
         {
-            // Strip spaces to avoid having to encode h264 profile names
+            // Strip spaces to avoid having to encode h264 profile names.
+            // Use plain key=value (no streamOptions[] wrapper) so ParseStreamOptions
+            // on the streaming endpoint picks them up correctly.
             sb.Append('&');
             sb.Append(pair.Key);
             sb.Append('=');