Function auto_grow_mode 

pub fn auto_grow_mode(
    wgt: &mut WidgetBuilding,
    mode: impl IntoVar<AutoGrowMode>,
)

B Defines the direction the grid auto-grows and the maximum inclusive index that can be covered by auto-generated columns or rows. If a cell is outside this index and is not covered by predefined columns or rows a new one is auto generated for it, but if the cell is also outside this max it is collapsed.

Is `AutoGrowMode::rows() by default.

Mixin Property

This property is a mixin, it modifies the widget builder during build, it does not produce a standalone UI node.