fix: Fixed ContractServiceQueriesSimpleFeesTest suite to prevent flakyness

[Evdokia-Georgieva]

Description:
Refactored ContractServiceQueriesSimpleFeesTest to remove balance snapshot validations that caused flakiness in the invalid-contract precheck tests, replacing them with hasCostAnswerPrecheck assertions.
Added contractCallLocalZeroGasFails test to cover the gas lower-boundary precheck case.

Related issue(s):
Fixes #24703

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.

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✅	Open Source Security	0	0	0	0	0 issues

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[codacy-production]

Not up to standards ⛔

🔴 Issues 2 minor

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

Results:
2 new issues

Category	Results
CodeStyle	2 minor

View in Codacy

🟢 Coverage ∅ diff coverage · 0.00% coverage variation

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

View coverage diff in Codacy

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (0209d4d)	96503	78220	81.05%
Head commit (8adb0ef)	96503 (+0)	78219 (-1)	81.05% (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 (#24704)	0	0	∅ (not applicable)

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

✅ All modified and coverable lines are covered by tests.

@@             Coverage Diff              @@
##               main   #24704      +/-   ##
============================================
- Coverage     77.12%   77.11%   -0.01%     
+ Complexity    11702    11701       -1     
============================================
  Files          2492     2492              
  Lines         96600    96600              
  Branches      10698    10697       -1     
============================================
- Hits          74499    74497       -2     
- Misses        18330    18331       +1     
- Partials       3771     3772       +1     

see 1 file with indirect coverage changes

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[github-actions]

⚠️ New Flaky Test(s) Detected — Action Required

New flaky tests were detected in this run. New tickets have been created and require your attention — please investigate whether the flakiness was introduced by changes in this PR.

Test	Ticket
com.hedera.services.bdd.suites.file.FileCreateSuite#FetchFiles as written	#24742 (🆕 New)

Please review the linked tickets and determine if any of the new issues were caused by your changes.

[github-actions]

Flaky Test(s) Detected

One or more flaky tests were detected in this run. These tests have been reported before.

Test	Ticket
com.hedera.services.bdd.suites.validation.StreamValidationTest#streamsAreValid	#24709

[joshmarinacci]

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