That type of fixture is likely permitted in the shower zone. There are a few factors here:
1-Forget the shower for a moment, is the location wet or damp?
2-Is it subject to shower spray?
3-Is it permitted in the shower zone?
4-Is GFCI protection required?
1-If the location is wet then the fixture is required to be listed for wet locations. If it’s location is covered by a roof then the location is damp.
2-IMO it is not subject to shower spray therefore if this is a damp location then only a damp location fixture is required.
3-Wall mounted fixtures are permitted in the shower zone if damp or wet listed. Wet location fixtures are required if subject to shower spray.
4-GFCI protection is not required for fixtures in the shower zone unless the fixture manufacturer requires it as part of the listing of the fixture.