Fixed CS8602 warnings in the toolkit charts.

[Yokesh-SF4393]

Description

• Fixed CS8602 warnings in the blazor toolkit charts. Resolved 341 warnings and checked the bunit test cases and chart samples in sample browser manually.
• Updated the mobile mode SB rendering issue. Updated the max-width style property, which caused the SB page not rendering.
• Updated the program.cs documentation to configure the blazor toolkit charts.

Key Changes

• Updated MainLayout.razor file to fix the SB page rendering issue in mobile mode.
• Updated Charts getting started page with proper import syntax.
• Updated Chart component related files to clear the CS8602 warnings.

Files Affected

Samples

• samples/Blazor.Toolkit.Samples.Client/Layout/MainLayout.razor‎

Charts Samples

• samples/Blazor.Toolkit.Samples.Client/Pages/Components/Charts/GettingStarted.razor‎

Charts

• src/Components/Charts/Chart/Renderer/SeriesRenderers/BaseRenderers/ColumnBase.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/BaseRenderers/SeriesContainer.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/BaseRenderers/SplineBase.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/DatalabelRenderer/DataLabelRenderer.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/LastDatalabelRenderer/LastDataLabelRenderer.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/MarkerRenders/ChartMarkerRenderer.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/SeriesTypeRenderers/AreaSeriesRenderer.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/SeriesTypeRenderers/BubbleSeriesRenderer.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/SeriesTypeRenderers/MultiColoredAreaSeriesRenderer.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/SeriesTypeRenderers/MultiColoredLineSeriesRenderer.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/SeriesTypeRenderers/SplineAreaSeriesRenderer.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/SeriesTypeRenderers/SplineSeriesRenderer.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/SeriesTypeRenderers/StackingAreaSeriesRenderer.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/SeriesTypeRenderers/StackingBarSeriesRenderer.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/SeriesTypeRenderers/StackingColumnSeriesRenderer.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/SeriesTypeRenderers/StackingLineSeriesRenderer.cs
• src/Components/Charts/Chart/Renderer/SeriesRenderers/SeriesTypeRenderers/StepLineSeriesRenderer.cs
• src/Components/Charts/Chart/Renderer/StriplineRenderer/ChartStriplineRenderer.cs
• src/Components/Charts/Chart/Renderer/TrendlineRenderer/TrendlineBase.cs
• src/Components/Charts/Chart/Renderer/TrendlineRenderer/TrendlineSeriesRenderer/Trendline_SplineSeriesRenderer.cs
• src/Components/Charts/Chart/Renderer/UserInteractions/DataEditing.cs
• src/Components/Charts/Chart/Series/ChartSeries.cs
• src/Components/Charts/Chart/SfChart.razor.JsInterop.cs
• src/Components/Charts/Chart/UserInteractions/Tooltip/ChartData.cs
• src/Components/Charts/Common/BaseTooltip/TooltipData.razor.cs
• src/Components/Charts/Common/ChartUtils/ChartHelper.cs
• src/Components/Charts/Common/CommonLegend/LegendBase.cs
• src/Components/Charts/Common/SvgComponents/SvgPattern.razor

Samples & Tests

• Sample pages under samples/Blazor.Toolkit.Samples.Client/... (Tested for Charts and SB rendering in mobile mode)
• Playwright samples and specs under tests/Syncfusion.Blazor.Playwright.Test/... (Tested for charts)

[github-actions]

CI Summary

Job	Status
bUnit (.NET 8 / 9 / 10)	✅ Passed
Playwright	✅ Passed
NuGet vulnerability scan	✅ Passed
ESLint security	✅ Passed
XSS / unsafe markup scan	✅ Passed

Overall: ✅ All checks passed