Create short tensor str for nodes (#2262)

The display of constant value is now more concise.

```
>>> from onnxscript import ir
>>> n = ir.node("Add", [ir.Value(name="a", const_value=ir.tensor(1)), ir.Value(name="b", const_value=ir.tensor([1]*10))], name="n0")
>>> print(n)
%"anonymous:123273301338960"<?,?> ⬅️ ::Add(%"a"{1}, %"b"{[1, 1, 1, 1, 1, 1, 1, 1, 1, 1]})
>>> print(repr(n))
Node(name='n0', domain='', op_type='Add', inputs=(Value(name='a', const_value={Tensor<INT64,[]>(array(1), name=None)}), Value(name='b', const_value={Tensor<INT64,[10]>(array([1, 1, 1, 1, 1, 1, 1, 1, 1, 1]), name=None)})), attributes=OrderedDict(), overload='', outputs=(Value(name='anonymous:135329937264592', producer='n0', index=0),), version=None, doc_string=None)
```

Author: justinchuby

onnxscript/ir/_core.py

@@ -1263,6 +1263,18 @@ class Usage(NamedTuple):
     idx: int
 
 
+def _short_tensor_str_for_node(x: Value) -> str:
+    if x.const_value is None:
+        return ""
+    if x.const_value.size <= 10:
+        try:
+            data = x.const_value.numpy().tolist()
+        except Exception:  # pylint: disable=broad-except
+            return "{...}"
+        return f"{{{data}}}"
+    return "{...}"
+
+
 class Node(_protocols.NodeProtocol, _display.PrettyPrintable):
     """IR Node.
 
@@ -1427,7 +1439,7 @@ def __str__(self) -> str:
             + ", ".join(
                 [
                     (
-                        f"%{_quoted(x.name) if x.name else 'anonymous:' + str(id(x))}{x._constant_tensor_part()}"
+                        f"%{_quoted(x.name) if x.name else 'anonymous:' + str(id(x))}{_short_tensor_str_for_node(x)}"
                         if x is not None
                         else "None"
                     )