SUUVHelperGetFrontUVQ return a zero value for q

[MootoolsSoftware]

1. SketchUp/LayOut Version: 21.1.279
2. OS Platform: Windows

mesh.zip
On the attached file, face with PID #7302967 return a zero value for q when calling :

SUVertexGetPosition(vertice, &pos);
SUUVHelperGetFrontUVQ(front_uv_helper, &pos, &uvq);
float u = uvq.u / uvq.q;
float v = uvq.v / uvq.q;

As a result computing UV values lead to infinite values.
The file has been created using Sketchup or come from 3DWarehouse.

Note that checking values using ruby lead to the same result.

model = Sketchup.active_model
[mesh.zip](https://github.com/SketchUp/api-issue-tracker/files/7235248/mesh.zip)

face = model.find_entity_by_persistent_id(7302967)
uvh = face.get_UVHelper(true, true)
uvqs = face.vertices.map { |v| uvh.get_front_UVQ(v.position) }

[thomthom]

For internal reference: https://forums.sketchup.com/t/suuvhelpergetfrontuvq-return-suuvq-with-q-0-0f/175391

[sketchupbot]

Logged as: SKEXT-3198