In BF-35161, a slowdown in MacOs cause this failing test which checks that with 'allowPartialResults: true', if one shard times out due to a network error the other will still return results. When allowPartialResults is true, we allot 75% of the time to gathering the results and 25% to process if we need to return partial results here. When macOS slowed down, the 25% of the time budget was insufficient to process everything and mongos would timeout here. We should consider future-proofing this test so this doesn't happen with for future possible machine slowdowns.