fix: filter by pipeline or group when clicking on an edge in pipeline-graph

[StephenHulme]

Closes bug where clicking a pipeline in pipeline-group-mode filtered by undefined instead of the pipeline-group name

Changes proposed in this pull request

• filter by pipeline or group when clicking on an edge

Instructions for Reviewers

[All PRs] - Confirm PR template filled
[Feature Branches] - Review code
[Production Merges to main]
    - Check story numbers included
    - Check for debug code
    - Check version

[codeclimate]

Code Climate has analyzed commit 32ff150 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 91.1% (0.0% change).

View more on Code Climate.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 77.97%. Comparing base (1c5d060) to head (32ff150).

Files with missing lines	Patch %	Lines
app/frontend/javascript/pipeline-graph/index.js	0.00%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1999      +/-   ##
===========================================
- Coverage    77.97%   77.97%   -0.01%     
===========================================
  Files          463      463              
  Lines        17706    17708       +2     
  Branches       225      225              
===========================================
  Hits         13807    13807              
- Misses        3897     3899       +2     
  Partials         2        2              

Flag	Coverage Δ
javascript	69.68% <0.00%> (-0.02%)	⬇️
pull_request	77.97% <0.00%> (-0.01%)	⬇️
push	77.97% <0.00%> (-0.01%)	⬇️
ruby	91.16% <ø> (ø)

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