feat(24786): Reduce allocation rate sig validation

[mxtartaglia-sl]

Description:

Related issue(s):

Fixes #24786

Notes for reviewer:

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

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[lfdt-bot]

✅ Snyk checks have passed. No issues have been found so far.

Status	Scan Engine	Critical	High	Medium	Low	Total (0)
✅	Open Source Security	0	0	0	0	0 issues

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[codacy-production]

Not up to standards ⛔

🔴 Issues 7 medium · 18 minor

Alerts:
⚠ 25 issues (≤ 0 issues of at least minor severity)

Results:
25 new issues

Category	Results
BestPractice	4 medium 8 minor
CodeStyle	10 minor
Performance	3 medium

View in Codacy

🟢 Metrics 47 complexity

Metric	Results
Complexity	47

View in Codacy

🟢 Coverage 79.12% diff coverage · +0.00% coverage variation

Metric	Results
Coverage variation	✅ +0.00% coverage variation (-1.00%)
Diff coverage	✅ 79.12% diff coverage

View coverage diff in Codacy

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (defefdc)	96878	78157	80.68%
Head commit (68fc534)	96936 (+58)	78204 (+47)	80.68% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#24828)	91	72	79.12%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

_{TIP This summary will be updated as you push new changes. Give us feedback}

[codecov]

Codecov Report

❌ Patch coverage is 72.52747% with 25 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...nsus/event/intake/utils/EventSignatureChecker.java	77.14%	11 Missing and 5 partials ⚠️
...g/hiero/consensus/crypto/internal/JcaVerifier.java	0.00%	4 Missing ⚠️
...ava/org/hiero/consensus/crypto/SigningFactory.java	0.00%	2 Missing ⚠️
...iero/consensus/crypto/internal/SodiumVerifier.java	0.00%	2 Missing ⚠️
...impl/signature/DefaultEventSignatureValidator.java	88.88%	1 Missing ⚠️

@@             Coverage Diff              @@
##               main   #24828      +/-   ##
============================================
- Coverage     76.76%   76.75%   -0.01%     
- Complexity    11700    11737      +37     
============================================
  Files          2502     2504       +2     
  Lines         96975    97033      +58     
  Branches      10744    10748       +4     
============================================
+ Hits          74444    74482      +38     
- Misses        18768    18780      +12     
- Partials       3763     3771       +8     

Files with missing lines	Coverage Δ	Complexity Δ
.../org/hiero/base/crypto/BytesSignatureVerifier.java	100.00% <100.00%> (ø)	0.00 <0.00> (?)
...us/event/intake/impl/DefaultEventIntakeModule.java	64.58% <100.00%> (+0.37%)	6.00 <0.00> (ø)
...impl/validation/DefaultInternalEventValidator.java	100.00% <ø> (ø)	3.00 <0.00> (ø)
...event/intake/utils/DefaultEventFieldValidator.java	98.97% <ø> (ø)	28.00 <0.00> (?)
...impl/signature/DefaultEventSignatureValidator.java	93.54% <88.88%> (+6.51%)	7.00 <1.00> (-3.00)	⬆️
...ava/org/hiero/consensus/crypto/SigningFactory.java	66.66% <0.00%> (-5.34%)	0.00 <0.00> (ø)
...iero/consensus/crypto/internal/SodiumVerifier.java	77.77% <0.00%> (-22.23%)	0.00 <0.00> (ø)
...g/hiero/consensus/crypto/internal/JcaVerifier.java	46.66% <0.00%> (-16.97%)	0.00 <0.00> (ø)
...nsus/event/intake/utils/EventSignatureChecker.java	77.14% <77.14%> (ø)	11.00 <11.00> (?)

... and 13 files with indirect coverage changes

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