### 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)

x_ofs = MAX(style->get_margin(SIDE_LEFT), int(size.width - Math::ceil(style->get_margin(SIDE_RIGHT) + (text_width))));
					} else {
						x_ofs = style->get_offset().x;
					}
				} break;
				case HORIZONTAL_ALIGNMENT_CENTER: {
					if (!Math::is_zero_approx(scroll_offset)) {
						x_ofs = style->get_offset().x;
					} else {
						x_ofs = MAX(style->get_margin(SIDE_LEFT), int(size.width - (text_width)) / 2);
					}
				} break;
				case HORIZONTAL_ALIGNMENT_RIGHT: {
					if (rtl) {
						x_ofs = style->get_offset().x;
					} else {
						x_ofs = MAX(style->get_margin(SIDE_LEFT), int(size.width - Math::ceil(style->get_margin(SIDE_RIGHT) + (text_width))));
					}
				} break;
			}
			int ofs_max = width - style->get_margin(SIDE_RIGHT);
			int y_area = height - style->get_minimum_size().height;
			int y_ofs = style->get_offset().y + (y_area - text_height) / 2;
			Color selection_color = theme_cache.selection_color;
			Color font_color;
			if (is_editable()) {
				font_color = theme_cache.font_color;
			} else {
				font_color = theme_cache.font_uneditable_color;
			}