fix: remove warnings and speed up HTTPD

Removes 10 logs per side from a 'Basic' card in the reviewer

Android logs "W/System: A resource failed to call end." when a
 GZIPOutputStream is used temporarily without the outer stream
 being closed

It seems that there were 3 feasible solutions:
1) Disable gzip on the server
2) Disable all logs for this issue globally
3) Reflection + `ViolationLogger` (a `@hide` interface)

1) sped up execution on my phone, so was the obvious choice

Fixes 14924

AnkiDroid/src/main/java/com/ichi2/anki/pages/AnkiServer.kt

@@ -53,6 +53,10 @@ open class AnkiServer(
         return "http://$LOCALHOST:$listeningPort/"
     }
 
+    // it's faster to serve local files without GZip. see 'page render' in logs
+    // This also removes 'W/System: A resource failed to call end.'
+    override fun useGzipWhenAccepted(r: Response?) = false
+
     override fun serve(session: IHTTPSession): Response {
         val uri = session.uri
         val mime = getMimeFromUri(uri)