[NFC] Limit the range of integers so that the sum does not overflow in reduce test case (#7470)

Our CI hit an overflow issue in reduce test case with Triton
Interpreter.

```
FAILED language/test_core.py::test_reduce1d[4-1-1-sum-int32-32] - triton.runtime.errors.InterpreterError: InterpreterError("OverflowError('Python integer -4736833654 out of bounds for int32')")
FAILED language/test_core.py::test_reduce1d[4-1-1-sum-int32-64] - triton.runtime.errors.InterpreterError: InterpreterError("OverflowError('Python integer -17340316748 out of bounds for int32')")
FAILED language/test_core.py::test_reduce1d[4-1-1-sum-int32-128] - triton.runtime.errors.InterpreterError: InterpreterError("OverflowError('Python integer -15950412024 out of bounds for int32')")
FAILED language/test_core.py::test_reduce1d[4-1-1-sum-int32-512] - triton.runtime.errors.InterpreterError: InterpreterError("OverflowError('Python integer 6080852592 out of bounds for int32')")
```

There is a comment in the test_reduce1d about limiting the range of
Integers in case overflow but without actual code.
Add the limitation as the comment.

---------

Signed-off-by: Lu,Chengjun <[email protected]>
Co-authored-by: Thomas Raoux <[email protected]>

Author: chengjunlu

python/test/unit/language/test_core.py

@@ -2517,7 +2517,12 @@ def kernel(X, Z, BLOCK: tl.constexpr):
     # input
     rs = RandomState(17)
     # limit the range of integers so that the sum does not overflow
-    x = numpy_random((shape, ), dtype_str=dtype_str, rs=rs)
+    if dtype_str in integral_dtypes:
+        low = 0 if dtype_str in uint_dtypes else -100
+        high = 100
+        x = numpy_random((shape, ), dtype_str=dtype_str, rs=rs, low=low, high=high)
+    else:
+        x = numpy_random((shape, ), dtype_str=dtype_str, rs=rs)
     numpy_op = {
         'sum': np.sum,
         'max': np.max,