Small improvements for enemy features

[HylianFreddy]

This adds the following changes for Enemy Soul Shuffle and Enemy Randomizer:

• doors will no longer lock behind Link when the room contains soulless enemies, so that the player can simply go back out instead of being forced to savewarp or teleport away;
• randomized Dark Link will no longer be stuck in a falling animation when spawning in certain places, and will instead appear in the normal idle standing pose;
• Dead Hand will now detect explosions and come out of the ground even when soulless, similar to how Armos enemies can detect projectiles and wake up.