In Row Selection the string values 'single' and 'multiple' are deprecated in ag_grid

[bertbarabas]

See documentation at ag_grid:
https://www.ag-grid.com/react-data-grid/grid-options/#reference-selection-rowSelection

Even if it is left in, the RowSelectionOptions should be allowed.

I tried sending a dictionary which wasn't allowed and a json string representation of the dictionary and that was ignored.

[linear]

ENG-4247 In Row Selection the string values 'single' and 'multiple' are deprecated in ag_grid