[DRAFT] Ensure ConstPointers don't outlive parent

[justsmth]

See latest commits:

• a3f035c
• 61c1226
• de7674c
• c1671dd

Description of changes:

TODO

Call-outs:

TODO

Testing:

TODO

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license and the ISC license.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 85.73248% with 112 lines in your changes missing coverage. Please review.

Project coverage is 93.03%. Comparing base (c358484) to head (3177703).
Report is 167 commits behind head on main.

Files with missing lines	Patch %	Lines
aws-lc-rs/src/pqdsa/key_pair.rs	86.22%	6 Missing and 21 partials ⚠️
aws-lc-rs/src/evp_pkey.rs	91.74%	10 Missing and 8 partials ⚠️
aws-lc-rs/src/ed25519.rs	59.52%	4 Missing and 13 partials ⚠️
aws-lc-rs/src/ec.rs	66.66%	4 Missing and 5 partials ⚠️
aws-lc-rs/src/ec/encoding.rs	65.21%	0 Missing and 8 partials ⚠️
aws-lc-rs/src/rsa/key.rs	75.86%	2 Missing and 5 partials ⚠️
aws-lc-rs/src/agreement.rs	55.55%	0 Missing and 4 partials ⚠️
aws-lc-rs/src/ec/key_pair.rs	66.66%	0 Missing and 3 partials ⚠️
aws-lc-rs/src/pqdsa/signature.rs	92.68%	0 Missing and 3 partials ⚠️
aws-lc-rs/src/rsa/encryption.rs	66.66%	1 Missing and 2 partials ⚠️
... and 7 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #693      +/-   ##
==========================================
- Coverage   95.80%   93.03%   -2.77%     
==========================================
  Files          61       71      +10     
  Lines        8143     9839    +1696     
  Branches        0     9839    +9839     
==========================================
+ Hits         7801     9154    +1353     
- Misses        342      395      +53     
- Partials        0      290     +290     

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