If primitiveRestartEnable is set to true, computeBounds will fail

[jacky-wang7]

Describe the bug
vsg::ComputeBounds does not seem to determine the clearing of index 0xFFFFFFF.

To Reproduce
Steps to reproduce the behavior:

1. set vsg::InputAssemblyState->primitiveRestartEnable = true;
2. Set the vertex index to 0xFFFFFFFF.
3. node->accept(computeBounds)
4. t_vec3 error

Expected behavior
Can ComputeBounds skip special values?

[jacky-wang7]

In computerBounds:
bounds.add(matrix * dec3(vertices->at(uint_indices-at(i))));
if indices is a special value of 0xFFFFFFFF, It will error.
I don't know if there will be similar problems elsewhere. I have only encountered it in computerBounds.