MAINT: Prevent traceback chaining in _wrapfunc.

The traceback of `np.reshape([1, 2, 3], 2)` is shortened from
```
Traceback (most recent call last):
  File ".../numpy/core/fromnumeric.py", line 56, in _wrapfunc
    return getattr(obj, method)(*args, **kwds)
AttributeError: 'list' object has no attribute 'reshape'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File ".../numpy/core/overrides.py", line 151, in public_api
    implementation, public_api, relevant_args, args, kwargs)
  File ".../numpy/core/fromnumeric.py", line 296, in reshape
    return _wrapfunc(a, 'reshape', newshape, order=order)
  File ".../numpy/core/fromnumeric.py", line 66, in _wrapfunc
    return _wrapit(obj, method, *args, **kwds)
  File ".../numpy/core/fromnumeric.py", line 46, in _wrapit
    result = getattr(asarray(obj), method)(*args, **kwds)
ValueError: cannot reshape array of size 3 into shape (2,)
```
to
```
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File ".../numpy/core/overrides.py", line 151, in public_api
    implementation, public_api, relevant_args, args, kwargs)
  File ".../numpy/core/fromnumeric.py", line 300, in reshape
    return _wrapfunc(a, 'reshape', newshape, order=order)
  File ".../numpy/core/fromnumeric.py", line 70, in _wrapfunc
    return _wrapit(obj, method, *args, **kwds)
  File ".../numpy/core/fromnumeric.py", line 46, in _wrapit
    result = getattr(asarray(obj), method)(*args, **kwds)
ValueError: cannot reshape array of size 3 into shape (2,)
```

(The chained exception is really just an implementation detail.)

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