### Godot version

4.0.2

### System information

Ubuntu 22.04.1 LTS

### Issue description

WorldBoundary2D tries to imitate a line in hessian normal form, since unlike the Plane variant, Godot doesn't have a Line variant. But the distance in the property spinbox is forced above 0.01px for no reason, as negative values work just fine and make sense in the context.

### Steps to reproduce

Create a WorldBoundary2D, see the distance property's input field.

### Minimal reproduction project

N/A
#include "plane.h"
#include "core/math/math_funcs.h"
#include "core/variant/variant.h"
void Plane::set_normal(const Vector3 &p_normal) {
	normal = p_normal;
}
void Plane::normalize() {
	real_t l = normal.length();
	if (l == 0) {
		*this = Plane(0, 0, 0, 0);
		return;
	}
	normal /= l;
	d /= l;
}
Plane Plane::normalized() const {
	Plane p = *this;
	p.normalize();
	return p;
}
Vector3 Plane::get_any_perpendicular_normal() const {