fix: metamaskbot comment nits (#29636)

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## **Description**

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[![Open in GitHub
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This PR adds minor fixes and enhancements to things that were not worth
blocking the original metamaskbot PR for. Things like, comments, style,
reusability should be improved by this PR. Interestingly, I also saw
that the `$OWNER` environment variable was missing, but somehow the
workflow still worked. I added this environment variable just to make it
sane.

## **Related issues**

Fixes: #28572

## **Manual testing steps**

1. Everything should still work

## **Screenshots/Recordings**

Not applicable

## **Pre-merge author checklist**

- [x] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask
Extension Coding
Standards](https://github.com/MetaMask/metamask-extension/blob/main/.github/guidelines/CODING_GUIDELINES.md).
- [x] I've completed the PR template to the best of my ability
- [x] I’ve included tests if applicable
- [x] I’ve documented my code using [JSDoc](https://jsdoc.app/) format
if applicable
- [x] I’ve applied the right labels on the PR (see [labeling
guidelines](https://github.com/MetaMask/metamask-extension/blob/main/.github/guidelines/LABELING_GUIDELINES.md)).
Not required for external contributors.

## **Pre-merge reviewer checklist**

- [ ] I've manually tested the PR (e.g. pull and build branch, run the
app, test code being changed).
- [ ] I confirm that this PR addresses all acceptance criteria described
in the ticket it closes and includes the necessary testing evidence such
as recordings and or screenshots.

Author: itsyoboieltr

.github/workflows/publish-prerelease.yml

@@ -25,41 +25,44 @@ jobs:
           BASE_REF: ${{ github.event.pull_request.base.ref }}
         run: |
           merge_base="$(git merge-base "origin/${BASE_REF}" HEAD)"
-          echo "Merge base is '${merge_base}'"
           echo "MERGE_BASE=${merge_base}" >> "$GITHUB_OUTPUT"
+          echo "Merge base is '${merge_base}'"
 
       - name: Get CircleCI job details
         id: get-circleci-job-details
         env:
-          REPOSITORY: ${{ github.repository }}
+          OWNER: ${{ github.repository_owner }}
+          REPOSITORY: ${{ github.event.repository.name }}
+          # For a `pull_request` event, the branch is `github.head_ref``.
           BRANCH: ${{ github.head_ref }}
+          # For a `pull_request` event, the head commit hash is `github.event.pull_request.head.sha`.
           HEAD_COMMIT_HASH: ${{ github.event.pull_request.head.sha }}
+          JOB_NAME: job-publish-prerelease
         run: |
-          pipeline_id=$(curl --silent "https://circleci.com/api/v2/project/gh/$OWNER/$REPOSITORY/pipeline?branch=$BRANCH" | jq -r ".items | map(select(.vcs.revision == \"${HEAD_COMMIT_HASH}\" )) | first | .id")
+          pipeline_id=$(curl --silent "https://circleci.com/api/v2/project/gh/$OWNER/$REPOSITORY/pipeline?branch=$BRANCH" | jq --arg head_commit_hash "${HEAD_COMMIT_HASH}" -r '.items | map(select(.vcs.revision == $head_commit_hash)) | first | .id')
           workflow_id=$(curl --silent "https://circleci.com/api/v2/pipeline/$pipeline_id/workflow" | jq -r ".items[0].id")
-          job_details=$(curl --silent "https://circleci.com/api/v2/workflow/$workflow_id/job" | jq -r '.items[] | select(.name == "job-publish-prerelease")')
-          build_num=$(echo "$job_details" | jq -r '.job_number')
+          job_details=$(curl --silent "https://circleci.com/api/v2/workflow/$workflow_id/job" | jq --arg job_name "${JOB_NAME}" -r '.items[] | select(.name == $job_name)')
 
+          build_num=$(echo "$job_details" | jq -r '.job_number')
           echo 'CIRCLE_BUILD_NUM='"$build_num" >> "$GITHUB_OUTPUT"
+
           job_id=$(echo "$job_details" | jq -r '.id')
           echo 'CIRCLE_WORKFLOW_JOB_ID='"$job_id" >> "$GITHUB_OUTPUT"
 
-          echo "Getting artifacts from pipeline '${pipeline_id}', workflow '${workflow_id}', build number '${build_num}', job ID '${job_id}'"
+          echo "Getting artifacts from pipeline '${pipeline_id}', workflow '${workflow_id}', build number '${build_num}', job id '${job_id}'"
 
       - name: Get CircleCI job artifacts
         env:
           CIRCLE_WORKFLOW_JOB_ID: ${{ steps.get-circleci-job-details.outputs.CIRCLE_WORKFLOW_JOB_ID }}
         run: |
-          mkdir -p "test-artifacts/chrome/benchmark"
+          mkdir -p test-artifacts/chrome/benchmark
           curl --silent --location "https://output.circle-artifacts.com/output/job/${CIRCLE_WORKFLOW_JOB_ID}/artifacts/0/test-artifacts/chrome/benchmark/pageload.json" > "test-artifacts/chrome/benchmark/pageload.json"
 
-          bundle_size=$(curl --silent --location "https://output.circle-artifacts.com/output/job/${CIRCLE_WORKFLOW_JOB_ID}/artifacts/0/test-artifacts/chrome/bundle_size.json")
-          mkdir -p "test-artifacts/chrome"
-          echo "${bundle_size}" > "test-artifacts/chrome/bundle_size.json"
+          mkdir -p test-artifacts/chrome
+          curl --silent --location "https://output.circle-artifacts.com/output/job/${CIRCLE_WORKFLOW_JOB_ID}/artifacts/0/test-artifacts/chrome/bundle_size.json" > "test-artifacts/chrome/bundle_size.json"
 
-          stories=$(curl --silent --location "https://output.circle-artifacts.com/output/job/${CIRCLE_WORKFLOW_JOB_ID}/artifacts/0/storybook/stories.json")
-          mkdir "storybook-build"
-          echo "${stories}" > "storybook-build/stories.json"
+          mkdir storybook-build
+          curl --silent --location "https://output.circle-artifacts.com/output/job/${CIRCLE_WORKFLOW_JOB_ID}/artifacts/0/storybook/stories.json" > "storybook-build/stories.json"
 
       - name: Publish prerelease
         env: