fix programatical unhighlighting for BarCharView #3159
Merged
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There was an issue with reseting the highlight manually from code. The lastHighlighted property of ChartViewBase was not set to nil. Thus, calling chartView.highlightValue(nil) in the delegate method chartValueSelected( chartView: entry: highlight:)_ did not do anything, and the next time user tapped a bar the chartValueNothingSelected method was called instead of the intended chartValueSelected.