[OIC Toolbox] OIC forced to be 2D / GPSAltitude EXIF field not read

When one create a catalogue using the ArcGIS Pro OIC Toolbox, even if the active map is a 3D scene, the points are hard-coded to be 2D. Even if the photo has a `GPSAltitude` EXIF field, the plugin does not read the value.

One has to drag the exposure points from 2D to 3D, manually enables their z-values, and change the path to the new exposure points.
Indeed, the viewer is **able** to read the z-values of these photos after the onerous procedure, but they are currently useless.