Make sure Table and DataGrid examples that use avatars have aria-labels on the avatar component so that screen reader users know what the images are

https://react.fluentui.dev/?path=/docs/preview-components-table--default#cell-actions
https://react.fluentui.dev/?path=/docs/preview-components-datagrid--default