Increase MP3 sniffing distance

Issue: #2951

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=158960483

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

@@ -78,7 +78,7 @@ 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 = MpegAudioHeader.MAX_FRAME_SIZE_BYTES;
+  private static final int MAX_SNIFF_BYTES = 16 * 1024;
   /**
    * Maximum length of data read into {@link #scratch}.
    */