Update chart dataset properties and descriptions

- Corrected `Datalabels` description in `PolarAreaChartDataset`.
- Enhanced `RadarChartDataset` with default values and new hover properties.
- Updated `Datalabels` in `ScatterChartDataset` to reflect the correct dataset.

NOTE: This commit message is auto-generated using GitHub Copilot.

Author: gvreddy04

BlazorExpress.ChartJS/Models/ChartDataset/PolarAreaChart/PolarAreaChartDataset.cs

@@ -117,7 +117,7 @@ public class PolarAreaChartDataset : ChartDataset<double?>
     /// </summary>
     [AddedVersion("1.0.0")]
     [DefaultValue("new()")]
-    [Description("Gets or sets the data labels configuration for the polar area chart dataset. Use this property to customize the display of data labels, such as their position, format, or visibility, in the pie chart dataset. If not set, a default configuration is applied.")]
+    [Description("Gets or sets the data labels configuration for the polar area chart dataset. Use this property to customize the display of data labels, such as their position, format, or visibility, in the polar area chart dataset. If not set, a default configuration is applied.")]
     [ParameterTypeName(nameof(PolarAreaChartDatasetDataLabels))]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
     public PolarAreaChartDatasetDataLabels Datalabels { get; set; } = new();