### Godot version

4.0.2.stable.official [7a0977ce2]

### System information

Windows 10

### Issue description

LineEdit node with enabled "expand_to_text_length" option and "minimum_character_width = 0" and cleared margins in style overrides still has some empty space inside
![node](https://github.com/godotengine/godot/assets/23380802/86c79678-8422-4a98-8406-602edd7dc48b)
![node settings](https://github.com/godotengine/godot/assets/23380802/11d04d71-bbf1-4c16-8155-fe39b5bbd66b)
![style overrides](https://github.com/godotengine/godot/assets/23380802/6b3c3925-b4bd-455b-aac1-ddeb54a4d796)


### Steps to reproduce

1. Add LineEdit node
2. Set expand_to_text_length = true
3. Set minimum_character_width in theme overrides = 0
4. Set normal to StyleBoxEmpty


### Minimal reproduction project

[LineEdit can't be zero sized.zip](https://github.com/godotengine/godot/files/11566017/LineEdit.can.t.be.zero.sized.zip)

Ref<Texture2D> r_icon = display_clear_icon ? theme_cache.clear_icon : right_icon;
		if (alignment == HORIZONTAL_ALIGNMENT_CENTER) {
			if (Math::is_zero_approx(scroll_offset)) {
				x_ofs = MAX(style->get_margin(SIDE_LEFT), int(get_size().width - text_width - r_icon->get_width() - style->get_margin(SIDE_RIGHT) * 2) / 2);
			}
		} else {
			x_ofs = MAX(style->get_margin(SIDE_LEFT), x_ofs - r_icon->get_width() - style->get_margin(SIDE_RIGHT));
		}
		ofs_max -= r_icon->get_width();
	}
	
	Vector2 primary_caret_offset = get_caret_pixel_pos();
	if (MIN(primary_caret_offset.x, primary_caret_offset.y) <= x_ofs) {
		scroll_offset += x_ofs - MIN(primary_caret_offset.x, primary_caret_offset.y);
	} else if (MAX(primary_caret_offset.x, primary_caret_offset.y) >= ofs_max) {
		scroll_offset += ofs_max - MAX(primary_caret_offset.x, primary_caret_offset.y);
	}
	scroll_offset = MIN(0, scroll_offset);
	queue_redraw();
}
int LineEdit::get_caret_column() const {
	return caret_column;
}
void LineEdit::set_scroll_offset(float p_pos) {
	scroll_offset = p_pos;
	if (scroll_offset < 0.0) {
		scroll_offset = 0.0;
	}
}
float LineEdit::get_scroll_offset() const {