Reintroduce the realignment fix initially merged in 603b9dd

The fix was reverted due to a regression that turned out to be a false
alarm, since the solution to the regression was to increase the test
timeout.

Author: aratajew

IGC/Compiler/CISACodeGen/EmitVISAPass.cpp

@@ -18981,6 +18981,7 @@ void EmitPass::emitPushFrameToStack(Function* ParentFunction, unsigned& pushSize
             }
 
             pFP = ReAlignUniformVariable(pFP, EALIGN_GRF);
+            pOldFP = ReAlignUniformVariable(pOldFP, EALIGN_GRF);
             bool useA64 = (pFP->GetSize() == 8);
             if (shouldGenerateLSC())
             {