fix: returning empty tracer object on transactions without executed opcodes (#4965)

[BartoszSolkaBD]

Description

This PR fixes an issue where debug_traceTransaction could fail with RESOURCE_NOT_FOUND for transactions that reached consensus, produced a contract result, but did not execute any EVM opcodes or actions. It updates the OpcodeLogger, CallTracer, and PrestateTracer flows to return empty traces for such “non-executed but non-synthetic” transactions, independent of HEDERA_SPECIFIC_REVERT_STATUSES, while preserving the existing synthetic-transaction behavior.

Related issue(s)

Fixes #4965

Testing Guide

1. Execute debug_traceTransaction on Hedera Mainnet for transaction hash mentioned in the issue ("0x61f9f18591c513ec3f5e93a49457781c603eaaf1a583703f505e0fd76ba41ada")
2. Validate that empty tracer is returned instead of resource not found error

Changes from original design (optional)

N/A

Additional work needed (optional)

N/A

Checklist

• I've assigned an assignee to this PR and related issue(s) (if applicable)
• I've assigned a label to this PR and related issue(s) (if applicable)
• I've assigned a milestone to this PR and related issue(s) (if applicable)
• I've updated documentation (code comments, README, etc. if applicable)
• I've done sufficient testing (unit, integration, etc.)

[codecov]

Codecov Report

❌ Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
packages/relay/src/lib/debug.ts	0.00%	6 Missing ⚠️

❌ Your project check has failed because the head coverage (76.67%) is below the target coverage (80.00%). You can increase the head coverage or adjust the target coverage.

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HEAD has 22 uploads less than BASE

Flag	BASE (eb0e545)	HEAD (925e2f9)
	21	3
ws-server	1	0
config-service	1	0
relay	1	0
server	1	0

@@             Coverage Diff             @@
##             main    #4989       +/-   ##
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- Coverage   96.02%   76.67%   -19.35%     
===========================================
  Files         143      143               
  Lines       24064    24064               
  Branches     1912      926      -986     
===========================================
- Hits        23108    18452     -4656     
- Misses        932     5591     +4659     
+ Partials       24       21        -3     

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Files with missing lines	Coverage Δ
packages/relay/src/lib/debug.ts	35.67% <0.00%> (-62.20%)	⬇️

... and 83 files with indirect coverage changes

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[jasuwienas]

lgtm!
It looks like we’re wrapping getContractsResultsOpcodes and getContractResultWithRetry in try/catch blocks, and when we get a 404, we return null - so this should work as expected (unless we get sometjing else than 404 from mirrornode)