Enum: MessageBox.Icon.NONE being undefined causes Error

[boghyon]

This is a sub-issue of #4201. Due to the MessageBox.Icon.NONE being undefined, which is not allowed according to the documentation guideline, calling sap/ui/base/DataType.getType("sap.m.MessageBox.Icon") currently causes:

Uncaught (in promise) Error: Value undefined for enum type sap.m.MessageBox.Icon is not a string

openui5/src/sap.m/src/sap/m/MessageBox.js

Lines 169 to 181 in 6717fc9

	/**
	* Enumeration of the pre-defined icons that can be used in a MessageBox.
	* @enum {string}
	* @public
	*/
	MessageBox.Icon = {
	/**
	* Shows no icon in the message box.
	* @public
	*/
	NONE: undefined,

[i556484]

Hello @boghyon ,
Thank you for sharing this finding. I've created an internal incident DINC0487664. The status of the issue will be updated here in GitHub.