fix(core): close traversal iterators on failure

[imbajin]

An OLTP edge consumer could leave its active iterator open after failure, early stop or interruption. A full queue could also keep its producer blocked after the worker failed, and a later transaction cleanup failure could replace the original business error.

Close the owned iterator in finally, using the original input when preparation fails. Stop failed consumer queues so blocked producers can exit, propagate a normal stop so producers stop reading inputs, retain the first terminal error, and attach later cleanup failures as suppressed exceptions. Preserve the worker transaction binding and completion cleanup from #3314 while integrating current master and both native test registrations.

Remove the global algorithm classfile exclusion from the existing JaCoCo report. The same real native execution data now reports the traversal's exercised and unexercised code; coverage thresholds and upload selection are unchanged.

Validation: deterministic before/after controls with assertions enabled, real RocksDB failure/stop/interruption/capacity regressions, bounded full-queue producer/worker tests, focused Maven consumer tests, Java 17 formatting, clean reactor compilation, and three independent final reviews passed. The original database and column families reopen with createIfMissing=false. New-head CI is pending.

The runtime contract is documented in docs/storage-lifecycle.md. This validates active iterators and the tested standard lazy BFS queue path; complete C04 and distributed acceptance remain separate. Source: the original org #295 branch. No public configuration or dependency changes.

[codecov]

Codecov Report

❌ Patch coverage is 75.00000% with 15 lines in your changes missing coverage. Please review.
✅ Project coverage is 52.46%. Comparing base (6aa362a) to head (0198608).

Files with missing lines	Patch %	Lines
...main/java/org/apache/hugegraph/util/Consumers.java	68.29%	9 Missing and 4 partials ⚠️
...e/hugegraph/traversal/algorithm/OltpTraverser.java	89.47%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #3317      +/-   ##
============================================
+ Coverage     52.42%   52.46%   +0.03%     
+ Complexity     2273     2009     -264     
============================================
  Files           762      762              
  Lines         67400    67431      +31     
  Branches       9138     9151      +13     
============================================
+ Hits          35333    35376      +43     
+ Misses        28525    28521       -4     
+ Partials       3542     3534       -8     

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