SERVER-117612 changed the collMod behavior convert_to_capped_failure.js intended to test: for untracked unsharded collections the coordinator did not retry in case of non-retriable failure. Now, the coordinator does retry until completion, the main reason of the change is to fix the general behavior that could end up with the critical section held. This would make the multiversion suite to fail: older coordinators would fail while newer ones don't, so the test was flagged to prevent failures.

The purpose of this ticket is to remove the multiversion_incompatible flag once 9.0 becomes LTS.