[Paddle-TRT] support batch axis concatenation when using dynamic shape (#31627)

* support batch axis concatenation when using dynamic shape

* opteller can't return true early, or some test will not be executed

paddle/fluid/inference/tensorrt/op_teller.cc

@@ -159,9 +159,13 @@ bool OpTeller::Tell(const framework::ir::Node* node, bool use_no_calib_int8,
         return false;
       } else {
         int axis = BOOST_GET_CONST(int, desc.GetAttr("axis"));
+        if (with_dynamic_shape) {
+          if (axis < 0) return false;
+        } else {
           if (axis <= 0) return false;
         }
       }
+    }
     if (op_type == "transpose2" || op_type == "transpose") {
       if (!desc.HasAttr("axis")) {
         return false;