[BUG] Clicking delete with a portion of the text highlighted

[lqxchad]

When highlighting a portion of the text, the delete key does not work.
I modified the code to not ignore partially highlighted text and I did not find any negative impacts.

Here is the modified code below. Can you tell me if there is a problem with doing it this way?

InputHandler.prototype.handleKeydown = function (event) {
    var keyCode = event.which || event.charCode || event.keyCode;
    if (keyCode == 8 || keyCode == 46 || keyCode == 63272) {
        event.preventDefault();
        var selectionRangeLength = Math.abs(this.inputService.inputSelection.selectionEnd - this.inputService.inputSelection.selectionStart);

        if (selectionRangeLength >= (this.inputService.rawValue.length - this.inputService.prefixLength())) {
            this.clearValue();
        } else {
            this.inputService.removeNumber(keyCode);
            this.onModelChange(this.inputService.value);
        }
    }
};