loader: lazy-load source map cache in CJS loader

[gurgunday]

Not sure why we're not lazy loading this? Seems like a good candidate

[nodejs-github-bot]

Review requested:

• @nodejs/loaders

[codecov]

Codecov Report

❌ Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 89.68%. Comparing base (8ccbe8e) to head (5001e4c).
⚠️ Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/internal/modules/cjs/loader.js	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #62267      +/-   ##
==========================================
- Coverage   89.68%   89.68%   -0.01%     
==========================================
  Files         676      676              
  Lines      206495   206554      +59     
  Branches    39537    39549      +12     
==========================================
+ Hits       185204   185243      +39     
- Misses      13435    13450      +15     
- Partials     7856     7861       +5     

Files with missing lines	Coverage Δ
lib/internal/modules/cjs/loader.js	98.14% <75.00%> (-0.01%)	⬇️

... and 39 files with indirect coverage changes

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[H4ad]

Usually when you lazy load like this, there's one test that fails if this file is not included anymore in the main path.

node/test/parallel/test-bootstrap-modules.js

Line 99 in 2e5731e

'NativeModule internal/source_map/source_map_cache',

Did you run the tests locally? If not, try run this test and see if it fails.