Handle deeply nested and large number of leaf benchmarks

[vchuravy]

https://github.com/JuliaCI/BaseBenchmarks.jl/blob/a03d447d5e6a6ee21d5312518dd5ef00b2bd3418/src/array/ArrayBenchmarks.jl#L20C54-L33

https://github.com/EnzymeAD/Enzyme.jl/blob/7e3d060e866a4ceeaf9d1b85eaf45f604166e05e/benchmark/benchmarks.jl#L24

Have more deeply nested benchmarks than Trixi