Add qa test for unsupported index #26583
Description
We currently have a single core integration test, RecoveryWithUnsupportedIndicesIT, which checks ancient indexes are not loadable, with an expected error message. However, the test was written for the upgrade to 2.0, and so deals with a 0.20 index. We should instead have a qa test which builds an index using the last version before our full cluster restart supported versions, and checks the node failure.