### Godot version

v4.3.dev.custom_build [d76c1d0e5]

### System information

Linux

### Issue description

When opening the color picker by clicking on a color property the color changes slightly.

### Steps to reproduce

* Click on a property with value `Color(.5, .5, .5) ` in the inspector
* Click away
* Open the color picker again
* See the color change to Color(0.502, 0.502, 0.502) in the "RAW" tab

### Minimal reproduction project

[ColorChangeBug.zip](https://github.com/godotengine/godot/files/13545089/ColorChangeBug.zip)

Vector<Point2> points;
			Vector<Color> colors;
			Color col;
			col.set_ok_hsl(h, s, 1);
			Color col2;
			col2.set_ok_hsl(h, s, 0.5);
			Color col3;
			col3.set_ok_hsl(h, s, 0);
			points.resize(6);
			colors.resize(6);
			points.set(0, Vector2(c->get_size().x, 0));
			points.set(1, Vector2(c->get_size().x, c->get_size().y * 0.5));
			points.set(2, c->get_size());
			points.set(3, Vector2(0, c->get_size().y));
			points.set(4, Vector2(0, c->get_size().y * 0.5));
			points.set(5, Vector2());
			colors.set(0, col);
			colors.set(1, col2);
			colors.set(2, col3);
			colors.set(3, col3);
			colors.set(4, col2);
			colors.set(5, col);
			c->draw_polygon(points, colors);
			int y = c->get_size().y - c->get_size().y * CLAMP(v, 0, 1);
			col.set_ok_hsl(h, 1, v);
			c->draw_line(Point2(0, y), Point2(c->get_size().x, y), col.inverted());
		} else if (actual_shape == SHAPE_VHS_CIRCLE) {
			Vector<Point2> points;
			Vector<Color> colors;
			Color col;