[lua] Fix Attohwa Chasm ??? not respawning after Alastor Antlion

[PocketDev89]

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• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

Fixes the issue where the '???' was not respawning.

There was more to it. Alastar was not spawning at all when the feeder anatlon used sand blast. Since he never spawned it took it as he was never killed so the ??? would never respawn after killing the feeder and executioners.

Steps to test these changes

Trade the Antlion Trap to the ??? at F-10 to spawn Feeler Antlion. Keep it alive and let it build TP until it uses Sand Blast

Verified that Alastar was now spawning. Kill Alastar. Wait 5 minutes for ???