Templated samples with expand/collapse and pin icons should apply hover styles to specify they are clickable. #1138
Description
For any of the samples that include icons in their templates that can be clicked, should apply cursor hover style:
- https://staging6.infragistics.com/products/ignite-ui-blazor/blazor/components/grids/hierarchical-grid/multi-column-headers#blazor-hierarchical-grid-multi-column-headers-example
- https://www.infragistics.com/products/ignite-ui-web-components/web-components/components/grids/tree-grid/column-pinning#demo-2
- https://staging.infragistics.com/products/ignite-ui-blazor/blazor/components/grids/hierarchical-grid/column-moving#blazor-hierarchical-grid-column-moving-overview-example