fix: use slower maxk comp to match galsim

[beckermr]

See PR GalSim-developers/GalSim-for-JAX-GalSim-Testing#5

[codspeed-hq]

Merging this PR will not alter performance

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✅ 36 untouched benchmarks

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_{Comparing update-tests-1 (084b60d) with main (d91fcda)}

[beckermr]

@ismael-mendoza with the galsim maxk bug fixed, we now need to more complicated maxk comp to pass the test suite. This PR updates the test suite and switches to that.