crypto: support ML-KEM in Web Cryptography

[panva]

Adds ML-KEM and encap/decap methods to SubtleCrypto as per

• https://wicg.github.io/webcrypto-modern-algos/#partial-subtlecrypto-interface-methods
• https://wicg.github.io/webcrypto-modern-algos/#ml-kem

JWK import/export is not implemented because it has not been standardized yet and there are open questions about it in the IETF JOSE WG.

[nodejs-github-bot]

Review requested:

• @nodejs/crypto
• @nodejs/security-wg
• @nodejs/web-infra

[codecov]

Codecov Report

❌ Patch coverage is 90.02695% with 74 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.87%. Comparing base (d30090b) to head (8ed0c72).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/internal/crypto/webcrypto.js	91.00%	33 Missing ⚠️
lib/internal/crypto/ml_kem.js	89.19%	31 Missing ⚠️
src/crypto/crypto_keys.cc	78.04%	1 Missing and 8 partials ⚠️
lib/internal/crypto/keys.js	88.88%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #59569      +/-   ##
==========================================
+ Coverage   89.74%   89.87%   +0.13%     
==========================================
  Files         667      668       +1     
  Lines      195301   196032     +731     
  Branches    38261    38495     +234     
==========================================
+ Hits       175280   176191     +911     
+ Misses      12465    12314     -151     
+ Partials     7556     7527      -29     

Files with missing lines	Coverage Δ
lib/internal/crypto/ml_dsa.js	94.32% <100.00%> (-0.06%)	⬇️
lib/internal/crypto/util.js	95.05% <100.00%> (+0.20%)	⬆️
lib/internal/crypto/webidl.js	98.74% <100.00%> (+<0.01%)	⬆️
src/crypto/crypto_keys.h	56.60% <ø> (ø)
lib/internal/crypto/keys.js	95.17% <88.88%> (+0.03%)	⬆️
src/crypto/crypto_keys.cc	73.56% <78.04%> (+0.26%)	⬆️
lib/internal/crypto/ml_kem.js	89.19% <89.19%> (ø)
lib/internal/crypto/webcrypto.js	96.05% <91.00%> (-1.29%)	⬇️

... and 45 files with indirect coverage changes

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[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/68797/