Datagrid: Select all checkbox header of the data grid have an audible of "Select All"

[rvilleno]

Is your feature request related to a problem? Please describe. Yes, this is related to a VPAT issue wherein we need to add an audible to the select all checkbox on a data grid that allows multiple selections

Describe the solution you'd like Maybe adding aria-label or aria-labelledby attribute can be used to provide an accessible label for the select all checkbox

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.

Additional context When being accessed by a screen reader for visually impaired users, what is usually is announced is that it is a checkbox and if its unchecked or not, it does not convey what is the purpose of the checkbox.