### Godot version

v4.1.stable.official [970459615]

### System information

Godot v4.1.stable - Pop!_OS 22.04 LTS - Vulkan (Compatibility) - NVIDIA GeForce MX350 (nvidia; 525.116.04) - 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz (8 Threads)

### Issue description

When I use the color picker to change a color, I can paste an HTML color code or write it myself. I can also prefix my text with a `#`  &mdash; the color picker will accept it as a valid color and update the corresponding element with that color. This is especially useful when I copy an HTML color code from a color palette like the one on lospec.com, since they always have a hash in front of them.

However, I cannot paste HTML color codes with surrounding spaces into this text box, even though the color code (without the spaces) is valid.

I would definitely call this behaviour a bug, since other programs like Affinity Designer, Blender or Gimp are very permissive about the input of HTML color codes. Or according to Jon Postel, *Be conservative in what you send, be liberal in what you accept.*

### Steps to reproduce

Preparation: 

1. create a new Godot project
2. create a new 2d scene
3. add a ColorRect node.
4. open the color picker for the color attribute in the inspector tab.

Explore the bug:

1. enter a valid HTML color code like `000` (black) => color is updated.
2. enter a valid HTML color code like `#fff` (white) => color is updated.
3. enter a valid HTML color code with leading space, for example `   #000` => color is not updated.
4. enter a valid HTML color code like `#000`(black) => color is updated.
5. enter a valid HTML color code with surrounding spaces, e.g. `   fff   ` => color is not updated.
6. enter a valid HTML color code like `fff`=> color is updated.

### Minimal reproduction project

N/A
col.a = 1;
				colors2.set(1, col);
				col.set_hsv(h, 1, 0);
				colors2.set(2, col);
				col.a = 0;
				colors2.set(3, col);
				c->draw_polygon(points, colors2);
				break;
			}
			case SHAPE_HSV_RECTANGLE: {
				points.resize(4);
				colors.resize(4);
				colors2.resize(4);
				points.set(0, Vector2());
				points.set(1, Vector2(c->get_size().x, 0));
				points.set(2, c->get_size());
				points.set(3, Vector2(0, c->get_size().y));
				colors.set(0, Color(1, 1, 1, 1));
				colors.set(1, Color(1, 1, 1, 1));
				colors.set(2, Color(0, 0, 0, 1));
				colors.set(3, Color(0, 0, 0, 1));
				c->draw_polygon(points, colors);
				col = color;
				col.set_hsv(h, 1, 1);
				col.a = 0;
				colors2.set(0, col);
				col.a = 1;
				colors2.set(1, col);
				col.set_hsv(h, 1, 0);
				colors2.set(2, col);