The semantic label of the dialog used by accessibility frameworks to announce screen transitions when the dialog is opened and closed.
In iOS, if this label is not provided, a semantic label will be inferred from the title if it is not null.
In Android, if this label is not provided, the dialog will use the MaterialLocalizations.alertDialogLabel as its label.
- SemanticsConfiguration.namesRoute, for a description of how this value is used.
final String? semanticLabel;