Exclude nan in injection test

[haukekoehn]

Sometimes the injection parameters cause the lightcurve to generate with nans. These need to be excluded in the comparison between function lightcurve and command line lightcurve

[mcoughlin]

@haukekoehn easiest way to deal with code linting is through the pre-commit:

pre-commit install pre-commit run --files YOUR_FILE_PATH_HERE

[mcoughlin]

@haukekoehn personally, it would be better if the nan commit was on its own branch, and the other commits on another branch. The nan lines look fine.

[tsunhopang]

I agree with @mcoughlin that I would prefer to have this changes to the tests on its own branch, without the acceleration to the GW analysis.