[ML] Unable to select/delete data frame analytics models via UI in 7.15.0

[panbalag]

Kibana version:
7.15.0

Elasticsearch version:

7.15.0

Describe the bug:
Unable to select (and delete) data frame analytics models via UI in 7.15. Works in 7.13 but not in 7.15 (see pictures attached). Note that deleting models via api works.

Steps to reproduce:

1. Deploy cluster - version 7.15
2. Upload model in to cluster via api
3. Try to select model (user will not be able to do this in 7.15)

Expected behavior:

Able to select models and delete them.

Screenshots (if relevant):
7.13.0

7.15.0

[elasticmachine]

Pinging @elastic/ml-ui (:ml)