FFunctionalTestingModule::GetMapTests does not support World partition

{}World Partition "breaks" the BP functional tests.

If a map is setup with World Partition, then a BP functional test actor is added.
The new BP functional test is not added to the test list upon saving the actor.

For context, the Automated test framework queries map asset tags to gather information about BP functional tests through FFunctionalTestingModule::GetMapTests, but the tags seem to be updated only when the map itself is saved.

BP functional tests hook themselves to FWorldDelegates::GetAssetTags to register their tags.
The expectation is that the asset tags get updated when the actor is saved.

In the end FFunctionalTestingModule::GetMapTests does not support World Partition.