fix recursion limit triggering in hiero blasts

[warriorstar-orion]

What Does This PR Do

This PR fixes an issue where the hierophant blast would trigger BYOND's recursion limit due to simple mobs dropping mob spawners, which in the process of generating their organs, would trigger the hierophant blast on the same tile. Note that this wasn't actually an infinite loop, but a deeply nested call stack which caused BYOND to barf.

Why It's Good For The Game

Better logic.

Testing

Yeah

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Declaration

• I confirm that I either do not require pre-approval for this PR, or I have obtained such approval and have included a screenshot to demonstrate this below.

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Changelog

NPFC