[Grid][Filter] - Error when sending [null, true] as a system.boolean to backend for the field checkbox

[xIrusux]

[xIrusux]

@lukmzig
I just pulled it all to check.
yes and null works well now.
But [null, false] is still a problem.

[xIrusux]

@lukmzig @heigpa all works now! awesome :)
closing issue again