Deploy review-apps if test succeeds

What does this MR do?

Changes review app deployment to happen only if test stage succeeds. This would keep the time saving gained by running review-build-cng concurrently to the test stage, but at the same time reducing the need to perform review:deploy for pipelines that don't pass the test stage. Consequently, it reduces the number of deployments that need to be performed on the review-apps-ee cluster.

#36102 (comment 249717680)

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Closes #36102 (closed)