Missing wp_unslash() for money values

In Swiss German the thousand separator is an apostrophe so a money value can be `2'180.00`. But if it gets sanitized the value of `$this->value` is actually `2\'180.00` which breaks the replacements and you get `2.00`.

This seems to be introduced by c325d63aee8c36095c66564d56d24c40f96ccd99.