Gh-3340: Misleading vertices in Gremlin

[tb06904]

Fixes issue of odd number of vertices being returned if lots of edges are in the Gaffer result. This is primarily due them not being filtered out in the view as they are used in the orphaned vertex check. To fix this the orphan check has been made optional and opt in so the user should be aware of the potential side effects. Also increased default limit as it was quite low.

Related issue

• Resolve Misleading vertices returned in Gremlin #3340

[codecov]

Codecov Report

Attention: Patch coverage is 97.95918% with 1 line in your changes missing coverage. Please review.

Project coverage is 68.00%. Comparing base (e299ccc) to head (2f5c955).
Report is 2 commits behind head on develop.

Files with missing lines	Patch %	Lines
...a/uk/gov/gchq/gaffer/tinkerpop/GafferPopGraph.java	97.50%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #3341      +/-   ##
=============================================
- Coverage      68.01%   68.00%   -0.01%     
  Complexity      2596     2596              
=============================================
  Files            955      954       -1     
  Lines          30564    30555       -9     
  Branches        3376     3380       +4     
=============================================
- Hits           20787    20778       -9     
  Misses          8302     8302              
  Partials        1475     1475              

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[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

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