Change iXSelect onValueChange return type depending on the selected mode when values are cleared

[levinbohrisch]

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Suggestion / feature request

The value of IxSelect depends on the mode that is selected for the iXSelect componement (multiple= array, single = string) which also defines the return type of the IxSelect for the onValueChange event which returns depending on the mode either a string or an array.

Altough when the values are cleared (allowClear={true}) the onValueChange event always returns an empty array.
It would be more elegant if the onValueChange event returns an empty array or an empty string depending on the mode that is selected.

[github-actions]

🤖 Hello @levinbohrisch

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JIRA: [IX-3568]