Refactor SafeSerializationUtils for better performance

[shikharj05]

Description

[Describe what this change achieves]

• Category (Enhancement, New feature, Bug fix, Test fix, Refactoring, Maintenance, Documentation) - Enhancement
• Why these changes are required? Resolves [BUG/performance] Serialization/Deserialization check for safe classes adds performance overhead #4760
• What is the old behavior before changes and new behavior after changes?
  Adds a cache to avoid repeated checks for same class. Removes usage of stream() in favor of a for loop

Issues Resolved

[List any issues this PR will resolve]
#4760

Is this a backport? If so, please add backport PR # and/or commits #, and remove backport-failed label from the original PR.

Do these changes introduce new permission(s) to be displayed in the static dropdown on the front-end? If so, please open a draft PR in the security dashboards plugin and link the draft PR here

Testing

[Please provide details of testing done: unit testing, integration testing and manual testing]
UTs

Check List

• New functionality includes testing
• [NA] New functionality has been documented
• [NA] New Roles/Permissions have a corresponding security dashboards plugin PR
• [NA] API changes companion pull request created
• Commits are signed per the DCO using --signoff

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[codecov]

Codecov Report

Attention: Patch coverage is 88.88889% with 1 line in your changes missing coverage. Please review.

Project coverage is 71.41%. Comparing base (79a3299) to head (50be83b).

Files with missing lines	Patch %	Lines
...earch/security/support/SafeSerializationUtils.java	88.88%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4973      +/-   ##
==========================================
- Coverage   71.48%   71.41%   -0.08%     
==========================================
  Files         334      334              
  Lines       22552    22556       +4     
  Branches     3590     3589       -1     
==========================================
- Hits        16122    16109      -13     
- Misses       4639     4654      +15     
- Partials     1791     1793       +2     

Files with missing lines	Coverage Δ
...earch/security/support/SafeSerializationUtils.java	86.66% <88.88%> (+23.03%)	⬆️

... and 5 files with indirect coverage changes

[derek-ho]

LGTM