Fix incorrect variable mapping for PR util #6286

Job	Run time
Get changes	14s
Get image tag	1s
Lint files	2m 24s
Determine images to build and publish	14s
Add stack label	2s
Run Nuxt checks	0s
Check Nuxt build	0s
Run checks for packages/*	0s
Build Docker images	0s
Build full-stack docs	0s
Run Playwright tests	0s
Run Nuxt checks (unit_test)	1s
Run checks for packages/* (build)	1s
Run tests for the catalog	0s
Run checks for packages/* (unit_test)	1s
Run catalog checks	0s
Run tests for ingestion-server	0s
Run Django checks	0s
Run tests for the API	0s
Post Playwright test debugging instructions	4s
Run Playwright tests (playwright_vr)	1s
Run Playwright tests (playwright_e2e)	1s
Run Playwright tests (storybook)	1s
Run Django checks (check_django)	1s
Run Django checks (validate_openapi)	1s
Run Django checks (check_migrations)	1s
Run Django checks (test_doc)	1s
Emit full-stack docs	0s
Publish Docker images	0s
Deploy staging frontend	0s
Deploy staging API	0s
Send Slack report	0s
	3m 9s

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