run_layer_test also runs symbolic calls when input_data is provided.

[hertschuh]

This uncovered an issue in one layer and an issue in a test.

[codecov]

Codecov Report

Patch coverage: 76.92% and project coverage change: +0.03% 🎉

Comparison is base (50c5f9a) 76.40% compared to head (9563dc1) 76.43%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #870      +/-   ##
==========================================
+ Coverage   76.40%   76.43%   +0.03%     
==========================================
  Files         329      329              
  Lines       31327    31333       +6     
  Branches     6095     6100       +5     
==========================================
+ Hits        23934    23949      +15     
+ Misses       5809     5803       -6     
+ Partials     1584     1581       -3     

Flag	Coverage Δ
keras_core	76.33% <76.92%> (+0.03%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
keras_core/layers/preprocessing/hashed_crossing.py	77.92% <50.00%> (+3.56%)	⬆️
keras_core/testing/test_case.py	85.90% <81.81%> (-0.53%)	⬇️

... and 5 files with indirect coverage changes

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[fchollet]

Thanks for the PR!

[fchollet]

LGTM