ci: Publish to npm only on successful tests

[ppawlowski]

Description

This pull request introduces the Check tests statuses job to the Publish workflow.

The purpose of this job is to ensure that the flowfuse package is published to the NPM registry only if at least one test job from the Tests workflow completes successfully. If all test jobs, as specified in the jobsToCheck array, are skipped, the package will not be published.
Moreover, the script verifies whether any of the test jobs failed. However, this scenario should not occur due to the github.event.workflow_run.conclusion == 'success' conditional statement, which ensures that the Tests workflow must have concluded successfully before reaching this point.

Related Issue(s)

Closes #4708

Checklist

• I have read the contribution guidelines
• Suitable unit/system level tests have been added and they pass
• Documentation has been updated
  • Upgrade instructions
  • Configuration details
  • Concepts
• Changes flowforge.yml?
  • Issue/PR raised on FlowFuse/helm to update ConfigMap Template
  • Issue/PR raised on FlowFuse/CloudProject to update values for Staging/Production

Labels

• Includes a DB migration? -> add the area:migration label