SprintfReturnTypeProvider crashes with unknown sprintf format

[fancyweb]

Hello, SprintfReturnTypeProvider crashes when sprintf is used with an invalid format, eg:

$a = 'a';
sprintf('foo "%" bar', $a);

https://psalm.dev/r/eef72f64c3

[psalm-github-bot]

I found these snippets:

https://psalm.dev/r/eef72f64c3

<?php

$a = 'a';
sprintf('foo "%" bar', $a);

Psalm encountered an internal error:

/vendor/vimeo/psalm/src/Psalm/Internal/Provider/ReturnTypeProvider/SprintfReturnTypeProvider.php: Unknown format specifier """

[orklah]

@kkmuffme can you take a look?

[kkmuffme]

Yeah, I know, it's just an artefact of #9817. The current PR was just the basic starting point, will PR a fix for this and the referenced issue today.