[Issue Report]: Diablo's speech played on dlvl 16 when joining the game after he's been killed.

[ikonomov]

Operating System

Windows x64

DevilutionX version

1.5.1

Describe

Diablo's speech played on dlvl 16 when joining the game after he's been killed. Stephen found that there is a check missing for him being dead. https://github.com/diasurgical/devilutionX/blob/bd3d17975c0c1040dd315d5205bc68b55cd4b253/Source/player.cpp#L3445-L3448

To Reproduce

1. Kill Diablo
2. Enter dlvl 16 with a character that hasn't visited it yet.

Expected Behavior

Diablo shouldn't be talking when he's dead.

Additional context

No response