RFR: 8314779: [testbug] Add test to all the XYCharts to check if chart components are removed when series is cleared [v2]

[Ajit Ghaisas]

On Wed, 6 Sep 2023 05:21:03 GMT, Karthik P K <kpk at openjdk.org> wrote:

>> Added test: `testChartLineAndAreaRemovedOnClearingSeries()` for `StackedAreaChart` to check if the line and fill elements gets removed from the series on clearing the series. This test is added similar to the tests added to `LineChart` and `AreaChart`.
>> This test is not required for `BarChart`, `BubbleChart` and `ScatterChart` as no node will added to the series in these charts.
>
> Karthik P K has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Review comments

Marked as reviewed by aghaisas (Reviewer).

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PR Review: https://git.openjdk.org/jfx/pull/1231#pullrequestreview-1612577672