### 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
Rect2 rect_new;
	if (display_old_color) {
		rect_new = Rect2(Point2(sample->get_size().width * 0.5, 0), Size2(sample->get_size().width * 0.5, sample->get_size().height * 0.95));
		
		const Rect2 rect_old = Rect2(Point2(), Size2(sample->get_size().width * 0.5, sample->get_size().height * 0.95));
		if (old_color.a < 1.0) {
			sample->draw_texture_rect(theme_cache.sample_background_icon, rect_old, true);
		}
		sample->draw_rect(rect_old, old_color);
		if (old_color.r > 1 || old_color.g > 1 || old_color.b > 1) {
			
			sample->draw_texture(theme_cache.overbright_indicator, Point2());
		}
	} else {
		rect_new = Rect2(Point2(), Size2(sample->get_size().width, sample->get_size().height * 0.95));
	}
	if (color.a < 1.0) {
		sample->draw_texture_rect(theme_cache.sample_background_icon, rect_new, true);
	}
	sample->draw_rect(rect_new, color);
	if (color.r > 1 || color.g > 1 || color.b > 1) {
		
		sample->draw_texture(theme_cache.overbright_indicator, Point2(uv_edit->get_size().width * 0.5, 0));
	}
}
void ColorPicker::_hsv_draw(int p_which, Control *c) {