Incorrect encoding of LineStrings when using fromGeojsonVt

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When using geojsonvt to create tilesets I found that some layers were incorrectly rendered.
Examining what happened I found that the geometry that comes from _geojsonvt_ contains all the LineString geometry on a single array: instead of having [[x0, y0], [x1, y1], ..., [xN, yN]] it's all flattened as [x0, y0, x1, y1, ... xN, yN].
When using _fromGeojsonVT_ this is not correctly interpreted in _FeatureWrapper::loadGeometry_ so the geometry contains an array of Points with undefined coordinates.

Should something be implemented in _vt-pbf::fromGeojsonVt_ to correctly interpret this case?
I was thinking about modifying GeoJSONWrapper to also store the feature type so when geometry is loaded from a LineString it checks wether the geometry comes as a single array or an array of arrays.

Start at FeatureWrapper::loadGeometry and inspect how GeoJSONWrapper represents LineString geometry from geojsonvt. Reproduce the issue with a flattened LineString, then ensure fromGeojsonVt produces points with valid coordinates for both flattened and nested geometry forms.

Written by the indexing model from the issue text.