Failed to cast np.int to int

[gcesars]

Describe the bug
When you try to create a pointer block with the argument of the type np.int, it raises an exception. If you simply cast it with int() it works, but it is not easy to diagnose.

To Reproduce

import taichi as ti
import numpy as np

ti.init(arch=ti.gpu)

np_int = np.max([0, 1, 2])
block = ti.root.pointer(ti.i, np_int)

Log/Screenshots

[Taichi] version 1.1.3, llvm 10.0.0, commit 1262a70a, osx, python 3.10.6
[Taichi] Starting on arch=metal
Traceback (most recent call last):
  File "/test.py", line 7, in <module>
    block = ti.root.pointer(ti.i, np_int)
  File "/miniconda3/envs/env/lib/python3.10/site-packages/taichi/_snode/fields_builder.py", line 79, in pointer
    return self.root.pointer(indices, dimensions)
  File "//miniconda3/envs/end/lib/python3.10/site-packages/taichi/lang/snode.py", line 52, in pointer
    self.ptr.pointer(axes, dimensions,
TypeError: pointer(): incompatible function arguments. The following argument types are supported:
    1. (self: taichi._lib.core.taichi_python.SNode, arg0: List[taichi._lib.core.taichi_python.Axis], arg1: List[int], arg2: bool) -> taichi._lib.core.taichi_python.SNode

[strongoier]

Thanks for reporting this! This is indeed a bug and I've submitted #6211 to fix it.