The TimeSeriesSort perf test creates an index on meta, time but since SERVER-66689 this index already exists when a time series collection is created and the TimeseriesScalabilityImprovements feature flag is on. When the test is run we now get an error due to the duplicate indexes. We should edit this test to only create this index if it doesn't exist already.

We should also verify that the plans for each query are correct after this change (or really if there's a way to assert something about a query plan in Genny that would be ideal)