V24 middle-roof-light fix

Reason found in log(10):
- roofMiddleLeftStatic/right are loaded
- lightControl was false
- GIANTS reported missing GS_ATTR_TEXCOORD1 for ChromeLightStatic

Fix:
- adds UV1 (t1) to all 84 vertices of each middle-light mesh
- lightsIntensity for these two meshes uses guaranteed-white $data/shared/white_diffuse.dds
- keeps left middle in Group 2 and right middle in Group 1
- CTRL+B / CTRL+N and 400 ms unchanged
