init.rc: restorecon /data/media before chattr

The SELinux type of /data/media has changed from media_rw_data_file to
media_userdir_file, but the recursive restorecon of /data happens too
late when taking an upgrade.  Add a restorecon of /data/media to just
above the chattr command which needs the new label to be allowed.  This
doesn't "really" matter, since the chattr command is only needed just
after the directory was created anyway, but this fixes a SELinux denial.

Bug: 156305599
Bug: 232824121
Change-Id: I897be19ceb4686511469bdf7efda2483f298eee4