test/expressions/type_ctor/mat4x2/explicit/vectors/f32.wgsl

let m = mat4x2<f32>(vec2<f32>(0.0, 1.0),
                    vec2<f32>(2.0, 3.0),
                    vec2<f32>(4.0, 5.0),
                    vec2<f32>(6.0, 7.0));