fix: unify DeployStrategy empty-array errors to NoSuchElementException

[Ma77Ball]

What changes were proposed in this PR?

OneOnEach, RoundRobinDeployment, and RandomDeployment each leaked a different implementation-detail exception when next() was called on an empty available array (IndexOutOfBoundsException, ArithmeticException,
and IllegalArgumentException respectively), so callers had no single contract to handle. Each next() now guards available.isEmpty and throws NoSuchElementException("no available addresses"), the standard Scala/Java
contract for "no element to return". For OneOnEach, the post-iteration "exhausted" branch was also switched to NoSuchElementException, so both empty-init and exhausted paths agree.

Any related issues, documentation, or discussions?

Closes: #4732

How was this PR tested?

• Updated the three pinning specs in DeployStrategiesSpec (previously asserting the divergent exception types) to assert NoSuchElementException for: OneOnEach empty-init, OneOnEach exhausted-after-iteration,
  OneOnEach cursor-preserved-across-reinit, RoundRobinDeployment empty, and RandomDeployment empty.
• Ran sbt scalafmtAll no formatting changes to the modified files.
• Local sbt testOnly for the spec could not run due to a pre-existing build.sbt load error (AddMetaInfLicenseFiles not found), unrelated to this change; CI is expected to run the spec.

Was this PR authored or co-authored using generative AI tooling?

Co-authored with Claude Opus 4.7 in compliance with ASF

[Ma77Ball]

/request-review @Yicong-Huang

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 43.05%. Comparing base (8cf9e79) to head (b2ee2aa).

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #5029      +/-   ##
============================================
- Coverage     43.19%   43.05%   -0.14%     
- Complexity     2209     2212       +3     
============================================
  Files          1045     1045              
  Lines         40265    40187      -78     
  Branches       4251     4241      -10     
============================================
- Hits          17391    17304      -87     
- Misses        21803    21815      +12     
+ Partials       1071     1068       -3     

Flag	Coverage Δ		*Carryforward flag
access-control-service	39.53% <ø> (ø)		Carriedforward from 9ba490e
agent-service	33.72% <ø> (ø)		Carriedforward from 9ba490e
amber	43.89% <100.00%> (+0.03%)	⬆️
computing-unit-managing-service	0.00% <ø> (ø)		Carriedforward from 9ba490e
config-service	0.00% <ø> (ø)		Carriedforward from 9ba490e
file-service	32.18% <ø> (ø)		Carriedforward from 9ba490e
frontend	33.87% <ø> (-0.22%)	⬇️	Carriedforward from 9ba490e
python	90.37% <ø> (-0.12%)	⬇️	Carriedforward from 9ba490e
workflow-compiling-service	47.72% <ø> (-9.10%)	⬇️	Carriedforward from 9ba490e

*This pull request uses carry forward flags. Click here to find out more.

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[Ma77Ball]

@Yicong-Huang please review

[Ma77Ball]

@Yicong-Huang please review when you have time

[Yicong-Huang]

LGTM