[Interruption] if entity terminates, and then shard shuts down, entity termination is not waited

[mattiamanzati]

When an entity starts to terminate, it forks daemon the interruption effect and removes the entities from the alive set.
If shard interruption occurs and completes before that entity fully shutdown, entity termination will not complete.

Sample test written in typescript:
https://github.com/mattiamanzati/shardcake/blob/dca200d6c6c3d10a18379355cc23c74fab6338cf/test/SampleTests.ts#L292-L344

[ghostdogpr]

You're right, it should be waiting on the promise created earlier from terminateEntity. I will fix it.