<CustomDropdown> layout calcs should account for vertical margines

react-utils/src/shared/components/selectors/CustomDropdown/index.tsx

Lines 45 to 47 in 96e6c83

    
           const fitsDown = anchor.bottom + opsRect.height 
        
             < (window.visualViewport?.height ?? 0); 
        
           const fitsUp = anchor.top - opsRect.height > 0;

:point_up height values here do not include margins, if any... they should.

	const fitsDown = anchor.bottom + opsRect.height
	< (window.visualViewport?.height ?? 0);
	const fitsUp = anchor.top - opsRect.height > 0;