Fix Datagrid logs warning about invalid prop hasBulkActions of type array

[RoBYCoNTe]

Prop hasBulkActions passed to DatagridBody was computed as "array" instead of boolean generating this console error:

Warning: Failed prop type: Invalid prop hasBulkActions of type array supplied to ForwardRef, expected boolean.

[OoDeLally]

Same here.

It was introduced by d44d7a7#diff-edba3a2955ae4f00f365f75b18d43ae1b7d6a1a00c24fe63903fcd4ed679ec18R52.

It happens because hasBulkActions is guarded by the propType:

hasBulkActions: PropTypes.bool.isRequired

but DatagridBody is carelessly using JS's cast-to-boolean:

hasBulkActions: hasBulkActions && selectedIds,

so hasBulkActions ends up being an array.

Solution 1 (easy):

hasBulkActions: hasBulkActions && Boolean(selectedIds),

Solution 2 (harder but better): drop propTypes altogether and rely on Typescript, which already seems here anyway.

EDIT: Ah, I just saw #6122 :D

[fzaninotto]

Thanks!