fix: Marked Radarr studios as nullable to prevent crashes

src/network/radarr_network.rs

@@ -1206,6 +1206,7 @@ impl Network<'_, '_> {
         } = movie_response;
         let (hours, minutes) = convert_runtime(runtime);
         let size = convert_to_gb(size_on_disk);
+        let studio = studio.clone().unwrap_or_default();
         let quality_profile = app
           .data
           .radarr_data

src/network/radarr_network_tests.rs

@@ -4082,7 +4082,7 @@ mod test {
       status: "Downloaded".to_owned(),
       overview: "Blah blah blah".to_owned(),
       path: "/nfs/movies".to_owned(),
-      studio: "21st Century Alex".to_owned(),
+      studio: Some("21st Century Alex".to_owned()),
       genres: genres(),
       year: 2023,
       monitored: true,