### 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
return edit_alpha;
}
ColorPicker *ColorPickerButton::get_picker() {
	_update_picker();
	return picker;
}
PopupPanel *ColorPickerButton::get_popup() {
	_update_picker();
	return popup;
}
void ColorPickerButton::_update_picker() {
	if (!picker) {
		popup = memnew(PopupPanel);
		popup->set_wrap_controls(true);
		picker = memnew(ColorPicker);
		picker->set_anchors_and_offsets_preset(PRESET_FULL_RECT);
		popup->add_child(picker);
		add_child(popup, false, INTERNAL_MODE_FRONT);
		picker->connect("color_changed", callable_mp(this, &ColorPickerButton::_color_changed));
		popup->connect("about_to_popup", callable_mp(this, &ColorPickerButton::_about_to_popup));
		popup->connect("popup_hide", callable_mp(this, &ColorPickerButton::_modal_closed));
		picker->connect("minimum_size_changed", callable_mp((Window *)popup, &Window::reset_size));
		picker->set_pick_color(color);
		picker->set_edit_alpha(edit_alpha);
		picker->set_display_old_color(true);
		emit_signal(SNAME("picker_created"));
	}
}
void ColorPickerButton::_bind_methods() {