new panel width in pixel
if new width is not a number, or lower than minimum width
const newWidth = 500
if (JMap.Application.UI.SidePanel.getMinimumWidthOpenInPixel() <= newWidth) {
// returns the minimum side panel width
JMap.Application.UI.SidePanel.setWidthOpenInPixel(newWidth)
}
JMap.Application.UI.SidePanel.setWidthOpenInPixel
Returns the minimum side panel width.