Fix FastChain ART regression test failures

Martina Javurkovarequested to merge
pagacova/athena:24-FastChainART-FixRegressionTests into 24.0

This MR resolves regression test failures in FastChain ART. Now, there is only one regression test per ART test, checking the AOD output for FastChain workflows and standalone Track-Overlay tests, while the RDO output is checked for all other tests.

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