Test se_a_ebd to increase test coverage

[kmu]

This PR creates a test for se_a_ebd descriptor to increase test coverage.

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.57 🎉

Comparison is base (c129919) 74.65% compared to head (447d493) 75.22%.

Additional details and impacted files

@@            Coverage Diff             @@
##            devel    #2353      +/-   ##
==========================================
+ Coverage   74.65%   75.22%   +0.57%     
==========================================
  Files         223      223              
  Lines       22234    22441     +207     
  Branches     1627     1656      +29     
==========================================
+ Hits        16598    16882     +284     
+ Misses       4584     4476     -108     
- Partials     1052     1083      +31     

Impacted Files	Coverage Δ
source/op/matmul_flt2fix_nvnmd.cc	84.12% <0.00%> (-1.59%)	⬇️
source/lib/src/prod_env_mat.cc	70.58% <0.00%> (-1.02%)	⬇️
source/lib/src/fmt_nlist.cc	78.31% <0.00%> (-0.96%)	⬇️
source/api_c/src/c_api.cc	78.51% <0.00%> (-0.85%)	⬇️
source/lib/include/ComputeDescriptor.h	78.94% <0.00%> (-0.57%)	⬇️
deepmd/env.py	71.96% <0.00%> (ø)
deepmd/utils/argcheck.py	90.62% <0.00%> (ø)
deepmd/descriptor/hybrid.py	24.41% <0.00%> (ø)
deepmd/utils/data_system.py	82.19% <0.00%> (ø)
deepmd/descriptor/loc_frame.py	95.31% <0.00%> (ø)
... and 13 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.