Revert "Mute haptic channels by default."

This reverts commit 48af5aeeba.

No idea on how this simple CL can cause this problem but A/B tests
and bisection show that the problem disabpears when reverted.

Bug: 129721367
Test: no repro on build with revert.
Change-Id: I13e3d788d255c4b6e873bb1e9ce2cf92d2a18e41

media/java/android/media/AudioAttributes.java

@@ -557,7 +557,7 @@ public final class AudioAttributes implements Parcelable {
         private int mContentType = CONTENT_TYPE_UNKNOWN;
         private int mSource = MediaRecorder.AudioSource.AUDIO_SOURCE_INVALID;
         private int mFlags = 0x0;
-        private boolean mMuteHapticChannels = true;
+        private boolean mMuteHapticChannels = false;
         private HashSet<String> mTags = new HashSet<String>();
         private Bundle mBundle;
 
@@ -888,7 +888,7 @@ public final class AudioAttributes implements Parcelable {
 
         /**
          * Specifying if haptic should be muted or not when playing audio-haptic coupled data.
-         * By default, haptic channels are disabled.
+         * By default, haptic channels are enabled.
          * @param muted true to force muting haptic channels.
          * @return the same Builder instance.
          */