Fix Debugger Slider Bug

[ioedeveloper]

Fixed #253

[yann300]

I tried with

contract test {
    function t () public {
        uint[] memory array = new uint[](150);
        for (uint k = 0; k < 150; k++) {
            array[k] = k;
        }
    }
}

load more works but it has loaded until 249 although the actual size is 150

[yann300]

From UX perspektives, that might be good to open the array in a modal... (for a next PR anyway)

[yann300]

might even be fine to only loads the first 10 or 20 items from the array.. although 100 is fine (just a remark)
Also we should also probably do this for state array.

[yann300]

Also we should also probably do this for state array.

I suppose not in this PR.

[yann300]

Should we have e2e for this?
The contract above could fit.

[yann300]

if possible that'd better to use the commands. i.e something like

.selectContract('test')
    .createContract('')
    .clickInstance(2)
    .clickFunction('test1 - transact (not payable)', {types: 'bytes userData', values: '0x000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000015b38da6a701c568545dcfcb03fcb875f56beddc4'})