fix(nano): protect disabled builtin functions and fix oct

[glevco]

Motivation

Improve security of custom builtins.

Acceptance Criteria

• Improve disabled builtins function to reduce exposed properties by removing wrapping, adding slots, and making it FauxImmutable.
• Unify list of disabled builtins and AST name blacklist so they don't drift apart.
• Fix oct typo, it was incorrectly pointing to object.
• Move the following builtins from allowed to disabled, as they're not necessary: False, None, True, NotImplemented, Ellipsis, __doc__, __loader__, __package__, __spec__, complex.

Checklist

• If you are requesting a merge into master, confirm this code is production-ready and can be included in future releases as soon as it gets merged

[github-actions]

Bencher Report

Branch	fix/nano/custom-builtins
Testbed	ubuntu-22.04

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Benchmark	Latency	Benchmark Result minutes (m) (Result Δ%)	Lower Boundary minutes (m) (Limit %)	Upper Boundary minutes (m) (Limit %)
sync-v2 (up to 20000 blocks)	📈 view plot 🚷 view threshold	1.90 m (+13.86%) Baseline: 1.66 m	1.50 m (79.05%)	2.00 m (94.88%)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.63%. Comparing base (3be193b) to head (1615b27).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1363      +/-   ##
==========================================
- Coverage   85.67%   85.63%   -0.05%     
==========================================
  Files         429      429              
  Lines       32439    32444       +5     
  Branches     5068     5068              
==========================================
- Hits        27793    27783      -10     
- Misses       3616     3628      +12     
- Partials     1030     1033       +3     

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