printf() can strip sign of -INF

### Description

The following code:

```php
<?php
var_dump(sprintf("%.17g", -INF));
```

Resulted in this output:
```
string(3) "INF"
```

But I expected this output instead:
```
string(4) "-INF"
```


### PHP Version

PHP 8.3.11

### Operating System

Ubuntu 24.04