Permanently enable filename sanitizer

[janhalen]

In os2forms_digital_post os2forms_attachment the filename sanitizer option should be enabled permanently and there should be no option to disable it.

Some research should be made whether the built-in sanitazion matches the criteria from Digitaliseringsstyrelsen (described at the bottom of this doc: https://digitaliser.dk/digital-post/vejledninger/tilladte-filtyper-og-navne) or if some additional filters should be added to match the criteria from Digitaliseringstyrelsen.

[janhalen]

@jekuaitk & @rimi-itk: Please correct or add to this issue if i missed something...

[jekuaitk]

The discussed sanitation changes should be made to os2forms_attachment.

In the os2forms_digital_post handler webform builders configure which element contains the attachment that should be sent via Digital Post. This can either be a

• os2forms_attachment, or a
• webform_entity_print_attachment,

as seen in here.

As a sidenote i think we should consider only allowing the os2forms_attachment but that is for another time.

Both attachment elements use the mentioned Drupal built-in sanitization, since os2forms_attachment uses the webform webform_entity_print_attachment as a base.

[janhalen]

@jekuaitk : modulename corrected in issue description

[janhalen]

As a sidenote i think we should consider only allowing the os2forms_attachment but that is for another time.

@jekuaitk: When you have the time you could create an issue for this and describe the rationale so that the coordination comittee and @ChatBotBerg is aware of an pending work...