### 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
s = x / real_size.x;
				v = 1.0 - y / real_size.y;
			}
		}
		_copy_hsv_to_color();
		last_color = color;
		set_pick_color(color);
		_update_color();
		if (!deferred_mode_enabled) {
			emit_signal(SNAME("color_changed"), color);
		}
	}
}
void ColorPicker::_w_input(const Ref<InputEvent> &p_event) {
	Ref<InputEventMouseButton> bev = p_event;
	PickerShapeType actual_shape = _get_actual_shape();
	if (bev.is_valid()) {
		if (bev->is_pressed() && bev->get_button_index() == MouseButton::LEFT) {
			changing_color = true;
			float y = CLAMP((float)bev->get_position().y, 0, w_edit->get_size().height);
			if (actual_shape == SHAPE_VHS_CIRCLE || actual_shape == SHAPE_OKHSL_CIRCLE) {
				v = 1.0 - (y / w_edit->get_size().height);
			} else {
				h = y / w_edit->get_size().height;
			}
		} else {
			changing_color = false;
		}
		_copy_hsv_to_color();
		last_color = color;