### Godot version

4.1.1

### System information

linux

### Issue description

The `"%+f"` format adds a `+` sign in front of positive numbers. If you try to format `-0.0`, it breaks and displays both a `+` and a `-`.

### Steps to reproduce

```gdscript
@tool
extends EditorScript

func _run() -> void:
    print("%+f" % -0.0)
```

### Minimal reproduction project

see above
}
 ::utf16(const char16_t *p_utf16, int p_len) {
	 ret;
	ret.parse_utf16(p_utf16, p_len);
	return ret;
}
Error ::parse_utf16(const char16_t *p_utf16, int p_len) {
	if (!p_utf16) {
		return ERR_INVALID_DATA;
	}
	 aux;
	int cstr_size = 0;
	int str_size = 0;
	/* 
	bool byteswap = false; // 
	if (p_len < 0 || p_len >= 1) {
		bool has_bom = false;
		if (uint16_t(p_utf16[0]) == 0xfeff) { // 
			has_bom = true;
			byteswap = false;
		} else if (uint16_t(p_utf16[0]) == 0xfffe) { // 
			has_bom = true;
			byteswap = true;
		}
		if (has_bom) {
			if (p_len >= 0) {
				p_len -= 1;
			}
			p_utf16 += 1;
		}