Fix `D3D10_SB_OPERAND_INDEX_REPRESENTATION`

[qRoC]

The index representation in the operand token is a 3 bit value ([30:28], [27:25], [24:22]).

For now, D3D10_SB_OPERAND_INDEX_REPRESENTATION_MASK is 0x3, so D3D10_SB_OPERAND_INDEX_IMMEDIATE64_PLUS_RELATIVE value is always mapped as D3D10_SB_OPERAND_INDEX_IMMEDIATE32

[3Shain]

Hi, what does it fix exactly? Could you provide a context?

[K0bin]

Probably AI slob

[neo773]

@3Shain Can we close this?