[js/common] allow creating (u)int64 tensors in 2 ways (#16541)
### Description
allow creating (u)int64 tensors from either a number array or a bigint
array.
before:
```js
// TypeScript think is good, but actually does not work
// runtime error: Uncaught TypeError: Cannot convert 1 to a BigInt
const myTensor1 = new Tensor('int64', [1, 2, 3, 4], [2, 2]);
// runtime good, but TypeScript thinks myTensor2 is a string tensor
const myTensor2 = new Tensor('int64', [1n, 2n, 3n, 4n], [2, 2]);
```
after:
```js
// both work at runtime and TypeScript populates the correct types
const myTensor1 = new Tensor('int64', [1, 2, 3, 4], [2, 2]);
const myTensor2 = new Tensor('int64', [1n, 2n, 3n, 4n], [2, 2]);
```
onnxruntime
ecca1134 - [js/common] allow creating (u)int64 tensors in 2 ways (#16541)
