refactor: only restore storage key and value bound if necessary

[MrCroxx]

Signed-off-by: MrCroxx mrcroxx@outlook.com## What's changed and what's your intention?

Please explain IN DETAIL what the changes are in this PR and why they are needed. :D

As title.

Checklist

• I have written the necessary rustdoc comments
• I have added the necessary unit tests and integration tests
• I have passed make all (or make fast instead if the old tests are not modified) in my local environment.

Related issues or PRs (optional)

#327

[codecov]

Codecov Report

Attention: Patch coverage is 98.21429% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 77.86%. Comparing base (23bff43) to head (198bbcd).

❗ Current head 198bbcd differs from pull request most recent head 92aefac. Consider uploading reports for the commit 92aefac to get more accurate results

Files	Patch %	Lines
foyer-storage/src/generic.rs	96.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #388      +/-   ##
==========================================
+ Coverage   77.76%   77.86%   +0.09%     
==========================================
  Files          51       51              
  Lines        6423     6459      +36     
==========================================
+ Hits         4995     5029      +34     
- Misses       1428     1430       +2     

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[MrCroxx]

Outdated.