### 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
Ref<InputEventMouseButton> bev = p_event;
	if (bev.is_valid()) {
		if (bev->is_pressed() && bev->get_button_index() == MouseButton::LEFT) {
			set_pick_color(p_color);
			add_recent_preset(color);
			emit_signal(SNAME("color_changed"), p_color);
		} else if (bev->is_pressed() && bev->get_button_index() == MouseButton::RIGHT && can_add_swatches) {
			erase_preset(p_color);
			emit_signal(SNAME("preset_removed"), p_color);
		}
	}
}
void ColorPicker::_recent_preset_pressed(const bool p_pressed, ColorPresetButton *p_preset) {
	if (!p_pressed) {
		return;
	}
	set_pick_color(p_preset->get_preset_color());
	recent_presets.move_to_back(recent_presets.find(p_preset->get_preset_color()));
	List<Color>::Element *e = recent_preset_cache.find(p_preset->get_preset_color());
	if (e) {
		recent_preset_cache.move_to_back(e);
	}
	recent_preset_hbc->move_child(p_preset, 0);
	emit_signal(SNAME("color_changed"), p_preset->get_preset_color());
}
void ColorPicker::_text_changed(const String &) {
	text_changed = true;
}
void ColorPicker::_add_preset_pressed() {