[Encode] Disable VP9 padding on MTL

This is impact performance on large solution with not 8-aligned height

Author: leyu-yao

media_softlet/linux/Xe_M_plus/ddi/media_sku_wa_mtl.cpp

@@ -284,7 +284,7 @@ static bool InitMtlMediaWaExt(struct GfxDeviceInfo *devInfo,
 
     MEDIA_WR_WA(waTable, WaDisableSetObjectCapture, 1);
 
-    MEDIA_WR_WA(waTable, Wa_Vp9UnalignedHeight, 1);
+    MEDIA_WR_WA(waTable, Wa_Vp9UnalignedHeight, 0);
 
     MEDIA_WR_WA(waTable, Wa_15013355402, 1);