i spent some time now by searching addon´s or weakaura configs, but there is nothing i could find.
We are currently trying sha hc but sometimes i think there are orbs which heal the panda, but i couldn´t find a way to track this.
Did you use a kind of addon for this while progressing.
While im sure this wont help much, but at least after raid or if you doing it live, after each encounter you can check wol >analyze>hostile healing. While it may not be as correct as you would want due to range issues, it still records something, so that something should be non existant at best.