sat: fix probing.cc implem against stdc++17

note: Invented public ctor `A(a, b, v)` not defined in c++17
ref: https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0960r2.html

ortools/sat/probing.cc

@@ -104,8 +104,8 @@ class TrailCopy {
       }
       trail_index_[var] = i;
       trail_literals_.push_back(literal);
-      trail_info_.emplace_back(info.level, assignment_type, reason,
-                               reason_clause);
+      trail_info_.push_back(
+          {info.level, assignment_type, reason, reason_clause});
     }
 
     const int num_decisions = trail_.CurrentDecisionLevel();