Fix options page

[PSMJonas]

The output of the content based on the selected language did not work because the typeattribute was not present:

$type = $source['type'] ?? null;
return $type === 'options_page';

$type is always null.

[geck1942]

This DOES fix the issue! Nice call.- Beware in the commit, you've removed is_options_page but it is still called line 150