Increase MP3 sniff bytes

MP3 is last in the sniffing order now, so I think it's fine to do this
without worrying about impacting on other file types.

PiperOrigin-RevId: 322996771

library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp3/Mp3Extractor.java

@@ -109,7 +109,7 @@ public final class Mp3Extractor implements Extractor {
   /**
    * The maximum number of bytes to peek when sniffing, excluding the ID3 header, before giving up.
    */
-  private static final int MAX_SNIFF_BYTES = 16 * 1024;
+  private static final int MAX_SNIFF_BYTES = 32 * 1024;
   /**
    * Maximum length of data read into {@link #scratch}.
    */