Totems of undying don't prevent you from dying from the void

This bug is quite old, but it doesn't seem to have been reported yet.

When dying by taking void damage, totems of undying don't activate.

To reproduce

1. Hold a totem of undying in your hand
2. Fall into the void (e.g. in the end)
   → Note that you die while holding the totem, and the totem doesn't activate