fix vertex/triangle mismatch

[brnkhy]

triangulation library occasionally adds extra vertices to have a good result and we wasn't checking that before which caused vertex count / tri index mismatch.

[david-rhodes]

@brnkhy

• In what situations do these extra vertices get created? Randomly? Specific problem-cases?
• What does the final geometry look like without extra vertices?
• Can we tell the triangulation library to maintain original vert count?

[brnkhy]

@david-rhodes

• If I remember correctly I wasn't able to understand why/when it happens.
• No way to check that out as triangulation indexes uses that extra vertice and cant visualize without that.
• Documentation is horrible. there's a check which I thought would have fix this; Behavior.Quality = false; but did nothing either. I gave up on that search afterwards. We can look more into that once we have working copy on master though

[david-rhodes]

Ok, let's try to remember to revisit later.

[david-rhodes]

Examples still work and confirmed the fix works.