Missing Water Temple entrance from Morpha boss room

[fenhl]

The following was mentioned as a known issue in #1468. Since that PR has been merged, I'm posting it as a separate issue so it doesn't get forgotten.

Exiting the Water Temple boss room puts you at the beginning of Water Temple rather than outside the boss room. Unlike all other dungeons, Water Temple lacks an appropriate second entrance point at the boss door; we'd need a way to patch in another entrance to Water Temple to fix this correctly; this is outside my skillset. @engineer124 had been working on a way to patch in a corrected entrance location, but the current workaround is sufficient for testing.

[fenhl]

@engineer124 has provided a fix at https://github.com/engineer124/OoT-Randomizer/tree/water_boss_entrance which I've merged into dev-fenhl for testing.