model indexes error when values are removed

[dpsutton]

Describe the bug

Model indexes should surface records from models in search. When new values are present they should be indexed, and when values are no longer present they should no longer be in the index.

There's an issue when removing values from the index where we use the wrong column name in the update:

(when (seq deletions)
  (t2/delete! ModelIndexValue
              :model_index_id (:id model-index)
              :pk_ref [:in (->> deletions (map first))]))   ;; -> pk_ref is the column in model_index, not model_index_value

This yields values like:

select pk_ref, value_ref, state, error from model_index where state = 'error'

pk_ref,value_ref,state,error
"[""field"",563028,null]","[""field"",563018,null]",error,"ERROR: column ""pk_ref"" does not exist Position: 68"
"[""field"",534030,null]","[""field"",534037,null]",error,"ERROR: column ""pk_ref"" does not exist Position: 68"
"[""field"",545945,null]","[""field"",545948,null]",error,"ERROR: column ""pk_ref"" does not exist Position: 68"

To Reproduce

Index a model, have it not have values any longer, and then it errors trying to remove them.

Expected behavior

No response

Logs

No response

Information about your Metabase installation

master

Severity

p2 (possibly higher but fixing now)

Additional context

No response