### 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
wheel_shader.unref();
	circle_shader.unref();
	circle_ok_color_shader.unref();
}
void ColorPicker::set_focus_on_line_edit() {
	c_text->call_deferred(SNAME("grab_focus"));
}
void ColorPicker::_update_controls() {
	int mode_sliders_count = modes[current_mode]->get_slider_count();
	for (int i = current_slider_count; i < mode_sliders_count; i++) {
		sliders[i]->show();
		labels[i]->show();
		values[i]->show();
	}
	for (int i = mode_sliders_count; i < current_slider_count; i++) {
		sliders[i]->hide();
		labels[i]->hide();
		values[i]->hide();
	}
	current_slider_count = mode_sliders_count;
	for (int i = 0; i < current_slider_count; i++) {
		labels[i]->set_text(modes[current_mode]->get_slider_label(i));
	}
	alpha_label->set_text("A");
	slider_theme_modified = modes[current_mode]->apply_theme();
	if (edit_alpha) {
		alpha_value->show();
		alpha_slider->show();
		alpha_label->show();
	} else {