prevent crash on iOS from illegal access

prevent crash on iOS from illegal access. In HLSL, unlike c++, for the
statement if(A && B) B is executed whether A succeeds or fails. In this
case the result is a crash on iOS (since we convert from hlsl to d3dasm
to metal).

Assets/ScriptableRenderLoop/HDRenderPipeline/Lighting/TilePass/Resources/lightlistbuild-bigtile.compute

 	for(int l=0; l<iNrCoarseLights; l++)
 	{
 		const uint idxCoarse = lightsListLDS[l];
-        [branch]if (idxCoarse<(uint)g_iNrVisibLights && _LightVolumeData[idxCoarse].lightVolume != LIGHTVOLUMETYPE_SPHERE)		// don't bother doing edge tests for sphere lights since these have camera aligned bboxes.
+		bool canEnter = idxCoarse<(uint)g_iNrVisibLights;
+		if(canEnter) canEnter = canEnter && _LightVolumeData[idxCoarse].lightVolume != LIGHTVOLUMETYPE_SPHERE;		// don't bother doing edge tests for sphere lights since these have camera aligned bboxes.
+        [branch]if(canEnter)
 		{
 			SFiniteLightBound lgtDat = g_data[idxCoarse];
 	

Assets/ScriptableRenderLoop/fptl/lightlistbuild-bigtile.compute

 	const int totNrEdgePairs = 12*nrFrustEdges;
 	for(int l=0; l<iNrCoarseLights; l++)
 	{
-		const int idxCoarse = lightsListLDS[l];
-		[branch]if(idxCoarse<(uint) g_iNrVisibLights && g_vLightData[idxCoarse].lightType!=SPHERE_LIGHT)		// don't bother doing edge tests for sphere lights since these have camera aligned bboxes.
+		const uint idxCoarse = lightsListLDS[l];
+		bool canEnter = idxCoarse<(uint) g_iNrVisibLights;
+		if(canEnter) canEnter = canEnter && g_vLightData[idxCoarse].lightType!=SPHERE_LIGHT;		// don't bother doing edge tests for sphere lights since these have camera aligned bboxes.
+		[branch]if(canEnter)
 		{
 			SFiniteLightBound lgtDat = g_data[idxCoarse];