feat(config): optimize rate.limiter configuration parsing

[xxo1shine]

What does this PR do?
Optimize rate.limiter configuration parsing.

Why are these changes required?

This PR has been tested by:

• Unit Tests
• Manual Testing

Follow up

Extra details

[codecov-commenter]

Codecov Report

Merging #5206 (1cd7c3e) into release_v4.7.2 (3fa8c4f) will increase coverage by 0.26%.
The diff coverage is 72.22%.

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@@                 Coverage Diff                  @@
##             release_v4.7.2    #5206      +/-   ##
====================================================
+ Coverage             59.27%   59.53%   +0.26%     
- Complexity             8821     8860      +39     
====================================================
  Files                   836      836              
  Lines                 49628    49637       +9     
  Branches               5524     5526       +2     
====================================================
+ Hits                  29417    29552     +135     
+ Misses                17881    17752     -129     
- Partials               2330     2333       +3     

Impacted Files	Coverage Δ
common/src/main/java/org/tron/core/Constant.java	50.00% <ø> (ø)
...n/core/net/messagehandler/InventoryMsgHandler.java	40.00% <0.00%> (+7.64%)	⬆️
...ava/org/tron/common/parameter/CommonParameter.java	57.26% <50.00%> (+0.24%)	⬆️
...in/java/org/tron/core/net/P2pEventHandlerImpl.java	38.52% <83.33%> (+29.43%)	⬆️
.../src/main/java/org/tron/core/config/args/Args.java	60.03% <93.75%> (+0.22%)	⬆️

... and 21 files with indirect coverage changes

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