[Task]: Fix fixed length array size overflowing

[lochana-chathura]

Description

$subject. The following tests fail at the moment. It is included in the fixed-length-array-large-t.bal added by PR #42663.

public const int MAX_VALUE = 9223372036854775807;

public const int MAX_VALUE_M_1 = MAX_VALUE - 1;

// @type LargeArray < IntArray
type LargeArray int[MAX_VALUE];

// @type LargeArray <> LargeArray2
type LargeArray2 int[MAX_VALUE_M_1];

[heshanpadmasiri]

We already support array lengths that are constants

This is caused by an integer overflow here. But in general I think this indicate fixed length must be a long not an int to have the same behavior as nBallerina. Will send a fix

[heshanpadmasiri]

After an offline chat we decided not support this and instead give a proper error for such overflow. This is because our lists are internally backed by java arrays and their indices have an upper limit enforced by int not long. Note this is consistent with the existing behavior of jBallerina

[lochana-chathura]

Closing with #42701