chore: restore ServicesMainTest.java

[edward-swirldslabs]

Fixes #17261

This PR restores the ServicesMainTest.java file with updated unit tests reflecting the new exit conditions for checking node ids provided by commandline or environment variable.

[codecov]

Codecov Report

Attention: Patch coverage is 85.71429% with 1 line in your changes missing coverage. Please review.

Project coverage is 67.31%. Comparing base (70c450e) to head (7c9e1fc).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
...rc/main/java/com/hedera/node/app/ServicesMain.java	66.66%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #17262      +/-   ##
============================================
+ Coverage     67.24%   67.31%   +0.06%     
- Complexity    21991    22010      +19     
============================================
  Files          2583     2583              
  Lines         96307    96311       +4     
  Branches      10054    10054              
============================================
+ Hits          64763    64832      +69     
+ Misses        27839    27768      -71     
- Partials       3705     3711       +6     

Files with missing lines	Coverage Δ
...java/com/swirlds/platform/util/BootstrapUtils.java	17.98% <100.00%> (+10.73%)	⬆️
...rc/main/java/com/hedera/node/app/ServicesMain.java	30.98% <66.66%> (+23.79%)	⬆️

... and 15 files with indirect coverage changes

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.08% (target: -1.00%)	✅ 85.71%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (70c450e)	96090	68316	71.10%
Head commit (7c9e1fc)	96094 (+4)	68391 (+75)	71.17% (+0.08%)

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 (#17262)	7	6	85.71%

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%

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[mhess-swl]

Looks great! Thanks for plowing through this @edward-swirldslabs!