Do not inherit the height of the roof

[deevroman]

And again, the Eiffel Tower. The roof:height=330 and height=330 tags have been added to the outline.

Only height=4 is set on building:part. Now let's look at how the roofs are rendered:

OSMBuilding/src/buildingpart.js

Line 312 in d6e0a3e

roof.position.set(0, this.options.building.height - this.options.roof.height, 0);

Due to inheritance for building:part we get the height 4 - 330 = -326:

After fix: