fix(react-charts): Remove border and shading from annotations only chart

[srmukher]

Before:

After:

[github-actions]

📊 Bundle size report

Package & Exports	Baseline (minified/GZIP)	PR	Change
react-charts AreaChart	404.512 kB 123.769 kB	405.191 kB 123.875 kB	679 B 106 B
react-charts DeclarativeChart	724.258 kB 210.073 kB	726.179 kB 210.38 kB	1.921 kB 307 B
react-charts GanttChart	387.634 kB 117.484 kB	388.303 kB 117.636 kB	669 B 152 B
react-charts GroupedVerticalBarChart	395.514 kB 120.079 kB	396.184 kB 120.251 kB	670 B 172 B
react-charts HeatMapChart	389.749 kB 119.192 kB	390.387 kB 119.273 kB	638 B 81 B
react-charts LineChart	415.004 kB 125.838 kB	415.674 kB 125.972 kB	670 B 134 B
react-charts ScatterChart	394.916 kB 119.97 kB	395.586 kB 120.137 kB	670 B 167 B
react-charts VerticalBarChart	429.218 kB 125.201 kB	431.19 kB 125.536 kB	1.972 kB 335 B
react-charts VerticalStackedBarChart	401.564 kB 121.043 kB	402.234 kB 121.167 kB	670 B 124 B

Unchanged fixtures

Package & Exports	Size (minified/GZIP)
react-charts DonutChart	299.158 kB 89.227 kB
react-charts FunnelChart	290.413 kB 86.075 kB
react-charts GaugeChart	314.067 kB 92.925 kB
react-charts HorizontalBarChart	296.747 kB 87.108 kB
react-charts HorizontalBarChartWithAxis	63 B 83 B
react-charts Legends	235.853 kB 69.476 kB
react-charts SankeyChart	199.54 kB 61.375 kB
react-charts Sparkline	91.393 kB 28.708 kB

_{🤖 This report was generated against 835625e357d7fcf2f1deba1d8039637f262745e4}

[github-actions]

Pull request demo site: URL

[AtishayMsft]

Could you port this change in v8 as well

[srmukher]

Could you port this change in v8 as well

sure, will create a separate PR for v8