Fix#8128 LSS and sphere hit object intrinsics fail to compile (#8339)

Update intrinsics signature as per the nvapi header

Author: szihs

source/slang/hlsl.meta.slang

@@ -20876,7 +20876,7 @@ struct HitObject
     {
         __target_switch
         {
-        case hlsl: __intrinsic_asm "NvRtSphereObjectPositionAndRadius";
+        case hlsl: __intrinsic_asm "NvRtSphereObjectPositionAndRadius()";
         case cuda:
             {
                 __intrinsic_asm "optixHitObjectGetSpherePositionAndRadius";
@@ -20901,7 +20901,7 @@ struct HitObject
     {
         __target_switch
         {
-        case hlsl: __intrinsic_asm "NvRtLssObjectPositionsAndRadii";
+        case hlsl: __intrinsic_asm "NvRtLssObjectPositionsAndRadii()";
         case cuda:
             {
                 __intrinsic_asm "optixHitObjectGetLssPositionsAndRadii";
@@ -20932,7 +20932,7 @@ struct HitObject
     {
         __target_switch
         {
-        case hlsl: __intrinsic_asm "NvRtIsSphereHit";
+        case hlsl: __intrinsic_asm "NvRtIsSphereHit()";
         case cuda:
             {
                 __intrinsic_asm "optixHitObjectIsSphereHit";
@@ -20954,7 +20954,7 @@ struct HitObject
     {
         __target_switch
         {
-        case hlsl: __intrinsic_asm "NvRtIsLssHit";
+        case hlsl: __intrinsic_asm "NvRtIsLssHit()";
         case cuda:
             {
                 __intrinsic_asm "optixHitObjectIsLSSHit";