[Scalarizer] Intrinsic `uadd_with_overflow` should be scalarizable

[Icohedron]

The uadd_with_overflow intrinsic should be made scalarizable.

The primary use-case that spawned this issue is to be able to have its vector form be scalarized so that it can be lowered to several UAddc DXIL ops which perform the same function on scalars.

Some issues/PRs that benefit from this change:

• Implement the AddUint64 HLSL Function #99205
• [HLSL] [DXIL] Implement the AddUint64 HLSL function and the UAddc DXIL op #127137

Issues potentially affected by this change:

• [Scalarizer][Bug] Only scatter/gather in extract value for trivially vectorizable intrinsics #113624