[spirv] Emit the grad and const offset image ops in the correct order

Currently the grad and const offset image operand ids are emitted in the
incorrect order. This causes incorrect code gen if both the grad and const
offset image operands are used.

This fixes the compilation error found when running TopSpin 2k25 through
DXVK using the NVIDIA proprietary Vulkan driver.

src/spirv/spirv_module.cpp

@@ -3892,15 +3892,15 @@ namespace dxvk {
 
       if (op.flags & spv::ImageOperandsLodMask)
         m_code.putWord(op.sLod);
-
-      if (op.flags & spv::ImageOperandsConstOffsetMask)
-        m_code.putWord(op.sConstOffset);
-
+
       if (op.flags & spv::ImageOperandsGradMask) {
         m_code.putWord(op.sGradX);
         m_code.putWord(op.sGradY);
       }
-
+
+      if (op.flags & spv::ImageOperandsConstOffsetMask)
+        m_code.putWord(op.sConstOffset);
+
       if (op.flags & spv::ImageOperandsOffsetMask)
         m_code.putWord(op.gOffset);