Level instance in unloaded data layer stays loaded.

Repro Steps:

1. Make a Level Instance with a couple of props
2. Create a Data Layer for your level and assign the Level Instance to this Data Layer. Make it a Runtime Data Layer.
3. Add script for toggling the Data Layer state between Activated in Unloaded in the Level Blueprint
4. Run PIE and toggle the Data Layer, keeping an eye on the Data Layer outliner tab

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Result in 5.0: Data Layer toggles between Activated and Unloaded and props disappear when expected.

Result in 5.1: Data Layer toggles between Activated and Unloaded but props loaded regardless of state.