fix ChartViewBase.data assgin bug

[UnivexDont]

Issue Link 🔗

If I call ChartData setValueFormatter:DefaultValueFormatter func before I call ChartView data assign(chartView.data = data), the valueFormatter won't work.
Here is issue code....

let pFormatter = NumberFormatter()
pFormatter.numberStyle = .percent
pFormatter.maximumFractionDigits = 2
pFormatter.multiplier = 1
pFormatter.percentSymbol = "%"
data.setValueFont(.systemFont(ofSize: 11, weight: .light))
data.setValueTextColor(.black)
data.setValueFormatter(DefaultValueFormatter(formatter: pFormatter))
chartView.data = data

Goals ⚽

None

Implementation Details 🚧

None

Testing Details 🔍

Just test for myself project.