Memory leak caused by set and get methods of NDArray

[285220927]

Description

Memory cannot be released correctly when calling get and set methods
operating system: win10
djl version: 0.20.0
jdk: 1.8

Reproduce

NDManager manager = NDManager.newBaseManager(Device.cpu());
int[] ints = new int[1000 * 1000 * 3];
Arrays.fill(ints, 1);
while (true) {
    NDManager sub = manager.newSubManager();
    NDArray array = sub.create(ints, new Shape(1000, 1000, 3));
    NDArray eq = array.eq(1);

    array.set(new NDIndex(":"), 1); // no memory leaks
    array.get(new NDIndex(":")); // no memory leaks

    array.set(eq, 1); // memory leak
    array.get(eq); // memory leak

    sub.close(); // the allocated memory cannot be fully released, and each cycle will occupy some memory that cannot be released
}

When the parameter is NDIndex, it is normal
When the parameter is NDArray, the memory usage will continue to rise