Change parameters in cond for surface integrals for older jax versions (power9)

[pkim1818]

The surface integrals routine have use the cond function
masks = cond( has_endpoint_dupe, lambda: put(masks, jnp.array([0, -1]), masks[0] | masks[-1]), lambda: masks, )
But in older versions of jax (like the ones used for the traverse builds), cond requires the parameter "operand" which are arguments to the functions. The resulting fix is

masks = cond( has_endpoint_dupe, lambda _: put(masks, jnp.array([0, -1]), masks[0] | masks[-1]), lambda _: masks, operand=None )
Which works since both lambda functions don't take in any arguments. This also works for the newer versions of jax.

[dpanici]

Soon as all the tests pass, feel free to merge

[codecov]

Codecov Report

Merging #635 (c73fe0f) into master (94eef4b) will increase coverage by 0.00%.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #635   +/-   ##
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  Coverage   94.26%   94.27%           
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  Files          78       78           
  Lines       18102    18102           
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+ Hits        17064    17065    +1     
+ Misses       1038     1037    -1     

Files Changed	Coverage Δ
desc/compute/utils.py	95.60% <ø> (ø)

... and 1 file with indirect coverage changes