Final answer:
Rob can create a Pipeline in the UAT environment with an Auto-Resolved behavior and add the quality gate Validation Rule to that Pipeline. This way, the features that have passed the relevant Apex tests will be Deployed to UAT, while those that fail the test will be Auto-Resolved.
Step-by-step explanation:
Rob can create a Pipeline in the UAT environment with an Auto-Resolved behavior and add the quality gate Validation Rule to that Pipeline. This way, the features that have passed the relevant Apex tests will be Deployed to UAT, while those that fail the test will be Auto-Resolved.