Gh-3303: No error reported when Gremlin endpoint fails

[tb06904]

Fixes the issue where the status was always reported as 200 on the Gremlin execute endpoints. They now fail with 500 and a message.

Some misc fixes for open telemetry spans as well.

Related issue

• Resolve No error reported when Gremlin endpoint query fails  #3303

[codecov]

Codecov Report

Attention: Patch coverage is 92.30769% with 2 lines in your changes missing coverage. Please review.

Project coverage is 67.84%. Comparing base (5960ac1) to head (d26074d).
Report is 1 commits behind head on develop.

Files with missing lines	Patch %	Lines
...store/operation/handler/OperationChainHandler.java	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             develop    #3304   +/-   ##
==========================================
  Coverage      67.83%   67.84%           
  Complexity      2595     2595           
==========================================
  Files            951      951           
  Lines          30337    30352   +15     
  Branches        3342     3343    +1     
==========================================
+ Hits           20580    20593   +13     
- Misses          8291     8292    +1     
- Partials        1466     1467    +1     

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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

See analysis details on SonarCloud