Address `LinAlg` overload feedback for intrinsics

[V-FEXrt]

• There are some types that maybe need to be removed, we should explore where that discussion goes [SM6.10] Fix numeric types allowed in LinAlg intrins #8465 (comment)

• FillMatrix still uses numeric for the fill value, that was intentional because filling with int8_t4_packed feels wrong imo but we should actually sit down and have that discussion