Fix the load test comment condition

[obulat]

Fixes

Fixes #5020 by @obulat

Description

This PR fixes the Run k6 frontend all against local Nuxt failure when a PR is merged to main.

Part of the action is to post the load testing results as a comment to the PR. However, when the PR is merged to main, there is no pull_request associated with the event, and the comment cannot be found.

This PR adds a step that checks that the CI is running on a pull request (and not from a fork). The commenting steps (creating the comment, finding the previous comment, and updating the comment) only run if this step's output is true.

Testing Instructions

The CI should pass (both in this PR, and when this PR is merged into main)

Checklist

• My pull request has a descriptive title (not a vague title likeUpdate index.md).
• My pull request targets the default branch of the repository (main) or a parent feature branch.
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no visible errors.
• I ran the DAG documentation generator (ov just catalog/generate-docs for catalog
  PRs) or the media properties generator (ov just catalog/generate-docs media-props
  for the catalog or ov just api/generate-docs for the API) where applicable.

Developer Certificate of Origin

Developer Certificate of Origin

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    have the right to submit it under the open source license
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    of my knowledge, is covered under an appropriate open source
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[github-actions]

Latest k6 run output¹

$     ✓ status was 200

     checks.........................: 100.00% ✓ 8000      ✗ 0   
     data_received..................: 1.8 GB  7.9 MB/s
     data_sent......................: 1.0 MB  4.6 kB/s
     http_req_blocked...............: avg=11.96µs  min=2.12µs  med=4.09µs   max=7.89ms  p(90)=5.6µs    p(95)=6.05µs  
     http_req_connecting............: avg=5.9µs    min=0s      med=0s       max=5.79ms  p(90)=0s       p(95)=0s      
     http_req_duration..............: avg=592.05ms min=40.45ms med=535.59ms max=2.5s    p(90)=1.1s     p(95)=1.22s   
       { expected_response:true }...: avg=592.05ms min=40.45ms med=535.59ms max=2.5s    p(90)=1.1s     p(95)=1.22s   
   ✓ http_req_failed................: 0.00%   ✓ 0         ✗ 8000
     http_req_receiving.............: avg=153.63µs min=42.05µs med=112.63µs max=23.02ms p(90)=185.43µs p(95)=233.72µs
     http_req_sending...............: avg=22.29µs  min=6.79µs  med=19.45µs  max=3.29ms  p(90)=27.02µs  p(95)=34.52µs 
     http_req_tls_handshaking.......: avg=0s       min=0s      med=0s       max=0s      p(90)=0s       p(95)=0s      
     http_req_waiting...............: avg=591.88ms min=40.31ms med=535.4ms  max=2.5s    p(90)=1.1s     p(95)=1.22s   
     http_reqs......................: 8000    34.963043/s
     iteration_duration.............: avg=3.95s    min=1.22s   med=3.23s    max=11.66s  p(90)=8.48s    p(95)=9.03s   
     iterations.....................: 1200    5.244456/s
     vus............................: 8       min=8       max=30
     vus_max........................: 30      min=30      max=30

Footnotes

1. This comment will automatically update with new output each time k6 runs for this PR ↩