ci: enable layering check in bazel

[dbolduc]

Part of the work for #12760

Note that changes in the .bazelrc only affect our WORKSPACE. Downstream applications cannot be affected.

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This change is 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.50%. Comparing base (fbc2aa6) to head (525daad).
Report is 77 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #14721      +/-   ##
==========================================
- Coverage   93.50%   93.50%   -0.01%     
==========================================
  Files        2323     2323              
  Lines      207947   207947              
==========================================
- Hits       194440   194438       -2     
- Misses      13507    13509       +2     

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[scotthart]

Reviewed 1 of 1 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @dbolduc)