### 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)

ClassDB::bind_method(D_METHOD("is_expand_to_text_length_enabled"), &LineEdit::is_expand_to_text_length_enabled);
	ClassDB::bind_method(D_METHOD("set_caret_blink_enabled", "enabled"), &LineEdit::set_caret_blink_enabled);
	ClassDB::bind_method(D_METHOD("is_caret_blink_enabled"), &LineEdit::is_caret_blink_enabled);
	ClassDB::bind_method(D_METHOD("set_caret_mid_grapheme_enabled", "enabled"), &LineEdit::set_caret_mid_grapheme_enabled);
	ClassDB::bind_method(D_METHOD("is_caret_mid_grapheme_enabled"), &LineEdit::is_caret_mid_grapheme_enabled);
	ClassDB::bind_method(D_METHOD("set_caret_force_displayed", "enabled"), &LineEdit::set_caret_force_displayed);
	ClassDB::bind_method(D_METHOD("is_caret_force_displayed"), &LineEdit::is_caret_force_displayed);
	ClassDB::bind_method(D_METHOD("set_caret_blink_interval", "interval"), &LineEdit::set_caret_blink_interval);
	ClassDB::bind_method(D_METHOD("get_caret_blink_interval"), &LineEdit::get_caret_blink_interval);
	ClassDB::bind_method(D_METHOD("set_max_length", "chars"), &LineEdit::set_max_length);
	ClassDB::bind_method(D_METHOD("get_max_length"), &LineEdit::get_max_length);
	ClassDB::bind_method(D_METHOD("insert_text_at_caret", "text"), &LineEdit::insert_text_at_caret);
	ClassDB::bind_method(D_METHOD("delete_char_at_caret"), &LineEdit::delete_char);
	ClassDB::bind_method(D_METHOD("delete_text", "from_column", "to_column"), &LineEdit::delete_text);
	ClassDB::bind_method(D_METHOD("set_editable", "enabled"), &LineEdit::set_editable);
	ClassDB::bind_method(D_METHOD("is_editable"), &LineEdit::is_editable);
	ClassDB::bind_method(D_METHOD("set_secret", "enabled"), &LineEdit::set_secret);
	ClassDB::bind_method(D_METHOD("is_secret"), &LineEdit::is_secret);
	ClassDB::bind_method(D_METHOD("set_secret_character", "character"), &LineEdit::set_secret_character);
	ClassDB::bind_method(D_METHOD("get_secret_character"), &LineEdit::get_secret_character);
	ClassDB::bind_method(D_METHOD("menu_option", "option"), &LineEdit::menu_option);
	ClassDB::bind_method(D_METHOD("get_menu"), &LineEdit::get_menu);
	ClassDB::bind_method(D_METHOD("is_menu_visible"), &LineEdit::is_menu_visible);
	ClassDB::bind_method(D_METHOD("set_context_menu_enabled", "enable"), &LineEdit::set_context_menu_enabled);
	ClassDB::bind_method(D_METHOD("is_context_menu_enabled"), &LineEdit::is_context_menu_enabled);
	ClassDB::bind_method(D_METHOD("set_virtual_keyboard_enabled", "enable"), &LineEdit::set_virtual_keyboard_enabled);
	ClassDB::bind_method(D_METHOD("is_virtual_keyboard_enabled"), &LineEdit::is_virtual_keyboard_enabled);
	ClassDB::bind_method(D_METHOD("set_virtual_keyboard_type", "type"), &LineEdit::set_virtual_keyboard_type);
	ClassDB::bind_method(D_METHOD("get_virtual_keyboard_type"), &LineEdit::get_virtual_keyboard_type);
	ClassDB::bind_method(D_METHOD("set_clear_button_enabled", "enable"), &LineEdit::set_clear_button_enabled);