[wasm] Do the default int64-lowering for all non-i64 stores.

src/compiler/int64-lowering.cc

Index: src/compiler/int64-lowering.cc
diff --git a/src/compiler/int64-lowering.cc b/src/compiler/int64-lowering.cc
index ad6e64e0c55450051769b83352dc656c1edb96e4..ff61aa765d244abbc2c34ad569c609cb1e8739f0 100644
--- a/src/compiler/int64-lowering.cc
+++ b/src/compiler/int64-lowering.cc
@@ -237,9 +237,7 @@ void Int64Lowering::LowerNode(Node* node) {
         NodeProperties::ChangeOp(node, store_op);
         ReplaceNode(node, node, high_node);
       } else {
-        if (HasReplacementLow(node->InputAt(2))) {
-          node->ReplaceInput(2, GetReplacementLow(node->InputAt(2)));
-        }
+        DefaultLowering(node);
       }
       break;
     }