Unknown type 'EXTENSIONTYPE' in nested data structure

[James Henderson]

(from @nivekuil)

(xt/submit-tx node
  [[:put-docs :table
    {:data {:type :foo}
     :xt/id "doc-1"}
    {:type :bar,
     :xt/id "doc-2"}]])

results in Execution error (UnsupportedOperationException) at org.apache.arrow.vector.complex.impl.NullableStructWriter/<init> (NullableStructWriter.java:264). Unknown type: EXTENSIONTYPE

Seems related to apache/arrow#40773