IGC: Fixed LSC checker in VectorProcess

In VectorProcess::reLayoutLoadStore, checks if LSC is used by
"EmitPass::shouldGenerateLSCQuery" instead of "CPlatform::LSCEnabled" to
align with the checker used in EmitPass::emitStoreRawIndexed.

This avoids QW scatter/gather messages being generated on platforms those
supporting LSC but don't support QW scatter/gather messages.

Author: DianaChen

IGC/Compiler/CISACodeGen/VectorProcess.cpp

@@ -311,7 +311,7 @@ bool VectorProcess::reLayoutLoadStore(Instruction* Inst)
             useQW = has_QW_BTS_GS && nelts == 1 && (eTyBytes == 8U && align >= 8U);
         }
 
-        if (cgCtx->platform.LSCEnabled())
+        if (EmitPass::shouldGenerateLSCQuery(*cgCtx, Inst) == Tristate::True)
         {
             // With LSC, want to use QW if element size is 8 bytes.
             useQW = (eTyBytes == 8);