message: Fix animated extrusion direction.
  Fixes regression introduced by caused by incorrect clamping of
  extrusion ratio of _not_ flat buildings.
  Related-to:
diff: @@ -22,7 +22,7 @@ varying float vExtrusionRatio;
  // Cancel extrusionRatio (meaning, force to 1) if extrusionAxisLen < MIN_BUILDING_HEIGHT.
  const float MIN_BUILDING_HEIGHT_SQUARED = ${MIN_BUILDING_HEIGHT_SQUARED};
  float extrusionAxisLenSquared = dot(extrusionAxis.xyz, extrusionAxis.xyz);
  -vExtrusionRatio = max(1.0 - step(extrusionAxisLenSquared, MIN_BUILDING_HEIGHT_SQUARED), extrusionRatio);
  +vExtrusionRatio = max(1.0 - step(MIN_BUILDING_HEIGHT_SQUARED, extrusionAxisLenSquared), extrusionRatio);
  transformed = transformed + extrusionAxis.xyz * (vExtrusionRatio - 1.0);
  vExtrusionAxis = vec4(normalMatrix * extrusionAxis.xyz, extrusionAxis.w);
  