keyv - feat: (breaking) by default keyv no longer checks expires

[jaredwray]

Please check if the PR fulfills these requirements

• Followed the Contributing and Code of Conduct guidelines.
• Tests for the changes have been added (for bug fixes/features) with 100% code coverage.

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
keyv - feat: (breaking) by default keyv no longer checks expires

[codecov]

Codecov Report

❌ Patch coverage is 99.45355% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 99.94%. Comparing base (bca7d95) to head (30ea861).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
storage/memcache/src/index.ts	92.85%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##              main    #1923      +/-   ##
===========================================
- Coverage   100.00%   99.94%   -0.06%     
===========================================
  Files           40       40              
  Lines         3728     3974     +246     
  Branches       554      636      +82     
===========================================
+ Hits          3728     3972     +244     
- Misses           0        2       +2     

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[gemini-code-assist]

Code Review

This pull request introduces a new checkExpired configuration option to Keyv, enabling optional expiry validation at the Keyv layer. To support this and improve consistency, multiple storage adapters (Memory, DynamoDB, Etcd, Memcache, MongoDB, MySQL, Postgres, and SQLite) have been updated to perform manual expiry checks and cleanup during read operations. Feedback focuses on optimizing performance by avoiding $O(N^2)$ lookups in batch operations, preventing potential Out-Of-Memory errors in MongoDB by using cursors instead of .toArray(), and reducing database overhead in SQL adapters by avoiding DELETE queries on every cache miss.