Allow a Zone grabbed by zone selector to be used as a zone trigger in a BluePrint

I didn’t.
Been thinking about why I would want to use passive zone, which slipped under my radar until you mentioned them. Not sure what I would do with them.

Anyway the project above I went with person triggers.

https://github.com/SirGoodenough/HA_Blueprints/blob/c05d6fb431c1d84cb145c7d6dd5ffe5a60b1d9e2/Automations/Person_Alert_Blueprint.yaml.

Also found this, maybe help you?
How to use passive zones with automations.