Sadly it's not possible to do this within the current GoCD (to be fair, same with GitHub Actions and other similar systems).
The alternative (somewhat special to GoCD given is "proper" multi-pipeline fan-in support) is to remodel your pipelines to have the parallel jobs in a stage instead be parallel pipelines within a VSM which fan-in to a pipeline.
e.g let's say Pipeline P1 has Stage S1 with parallel jobs J11, J12, J13 and S2 is a single job J21 that is done when all three are complete. Instead of
material -> P1S1 (J11, J12, J13) --> P1S2 (J21)
model as
material --> P1S1 (J11). -------> P4S1 (J21)
\-> P2S1 (J12). -/
\-> P3S1 (J13). -/
With this setup the stages can be re-run independently when their single job fails.
-Chad