[Chart Annotations] Some samples in the topic are not 100% visible

[MarielaTihova]

1. Go to this topic: https://staging.infragistics.com/products/ignite-ui-angular/angular/components/charts/features/chart-annotations
2. Observe how the lines at the ends and their value points are not entirely visible

Expected result: Charts should be 100% visible
Actual result: Charts are partially cut