Gh-3334: Fix Gremlin Reusing Accumulo Iterators

[tb06904]

Moves Gremlin away from reusing the raw iterator passed back from the operation to instead buffering to a set first before continuing hopefully increasing performance.

Related issue

• Resolve Make Gremlin not reuse Accumulo Iterators #3334

[codecov]

Codecov Report

Attention: Patch coverage is 95.65217% with 2 lines in your changes missing coverage. Please review.

Project coverage is 68.00%. Comparing base (960c599) to head (eda0193).
Report is 1 commits behind head on develop.

Files with missing lines	Patch %	Lines
...rpop/process/traversal/util/GafferVertexUtils.java	83.33%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #3335      +/-   ##
=============================================
- Coverage      68.01%   68.00%   -0.01%     
  Complexity      2596     2596              
=============================================
  Files            955      954       -1     
  Lines          30564    30554      -10     
  Branches        3376     3375       -1     
=============================================
- Hits           20787    20779       -8     
+ Misses          8302     8301       -1     
+ Partials        1475     1474       -1     

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The merge-base changed after approval.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud