Use ApOkHttpUrlLoader for all images

Probably got broken during my Glide update.
When using append or prepend, Glide uses the next one in the chain if ApOkHttpUrlLoader blocks

core/src/main/java/de/danoeh/antennapod/core/glide/ApGlideModule.java

@@ -31,6 +31,6 @@ public class ApGlideModule extends AppGlideModule {
 
     @Override
     public void registerComponents(@NonNull Context context, @NonNull Glide glide, @NonNull Registry registry) {
-        registry.append(String.class, InputStream.class, new ApOkHttpUrlLoader.Factory());
+        registry.replace(String.class, InputStream.class, new ApOkHttpUrlLoader.Factory());
     }
 }