fix: Update integration tests for help text changes

The help text for --pr-number option was updated to be more specific
about pull_request-triggered workflows, so the integration test
snapshot needed to be updated to match.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: runningcode

tests/integration/_cases/build/build-upload-help-macos.trycmd

@@ -45,9 +45,9 @@ Options:
           The reference (branch) to use for the upload. If not provided, the current reference will
           be used.
       --pr-number <pr_number>
-          The pull request number to use for the upload. If not provided and running in a GitHub
-          Actions environment, the PR number will be automatically detected from GitHub Actions
-          environment variables.
+          The pull request number to use for the upload. If not provided and running in a
+          pull_request-triggered GitHub Actions workflow, the PR number will be automatically
+          detected from GitHub Actions environment variables.
       --build-configuration <build_configuration>
           The build configuration to use for the upload. If not provided, the current version will
           be used.