[Bug]: Removed attributes still present in the index

[kordano]

What version of Datahike are you using?

0.5.1515

What version of Java are you using?

openjdk version "19" 2022-09-20

What operating system are you using?

macos monterey 12.6

What database EDN configuration are you using?

{:wanderung/type :datahike
:store {:backend :mem
:id "testing"}
:schema-flexibility :write
:attribute-refs? true
:index :datahike.index/persistent-set
:keep-history true
:name "in-mem"

Describe the bug

Removed attributes still present in the history index.

What is the expected behaviour?

Removed attributes should not be present.

How can the behaviour be reproduced?

See https://gitlab.com/arbetsformedlingen/taxonomy-dev/backend/jobtech-taxonomy-api/-/issues/473