[db] ResetSnapshots() performance improvement

[millken]

Description

Reduced the computation of map keyhash, reduced keyCacheValue memory allocation, Mintblock time dropped by half, this PR has been tested on nightly

Fixes #(issue)

Type of change

Please delete options that are not relevant.

• [] Bug fix (non-breaking change which fixes an issue)
• [] New feature (non-breaking change which adds functionality)
• Code refactor or improvement
• [] Breaking change (fix or feature that would cause a new or changed behavior of existing functionality)
• [] This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• make test
• [] fullsync
• [] Other test (please specify)

Test Configuration:

• Firmware version:
• Hardware:
• Toolchain:
• SDK:

Checklist:

• [] My code follows the style guidelines of this project
• [] I have performed a self-review of my code
• [] I have commented my code, particularly in hard-to-understand areas
• [] I have made corresponding changes to the documentation
• [] My changes generate no new warnings
• [] I have added tests that prove my fix is effective or that my feature works
• [] New and existing unit tests pass locally with my changes
• [] Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

Attention: Patch coverage is 92.85714% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 76.40%. Comparing base (e1f0636) to head (9bed39b).
Report is 179 commits behind head on master.

Files	Patch %	Lines
db/batch/batch_impl.go	81.81%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4153      +/-   ##
==========================================
+ Coverage   75.38%   76.40%   +1.02%     
==========================================
  Files         303      339      +36     
  Lines       25923    28890    +2967     
==========================================
+ Hits        19541    22073    +2532     
- Misses       5360     5716     +356     
- Partials     1022     1101      +79     

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[CoderZhi]

any benchmark test?

[millken]

any benchmark test?

benchmark added

[dustinxie]

[:1]

[sonarcloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud