[CASSANDRA-21087] Fix non-determinism of repair fuzz tests by passing randomizer to RetryStrategy

[nivykani]

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[jyothsnakonisa]

Looks good overall, left a minor comment around the testing. Also, please correct JIRA information in the commit message and post the CI result in the JIRA with the Fuzz tests result this patch is trying to fix

[jyothsnakonisa]

Looks good!