Fix bug in InterceptorsStudioAutoConfiguration#settingsUploadInterceptors

A bug in settingsUploadInterceptor where the content type on the interceptor was falsely set to CMArticle has been resolved. The content type for the interceptor is CMDownload again.

(CMS-27059)

ConfigurableDeadLinkValidator is configurable now

The ConfigurableDeadLinkValidator (that validates dead links to deleted or destroyed documents) is configurable now. The excludedProperties config prop configurable-dead-link-validator.excluded-properties can be used to exclude properties from validation. The single validator operates on type Document and excludes by default the "placement" property.

(CMS-27045)

Fixed CommerceContentTypesPictureResolver for empty URLs

Fixed CommerceContentTypesPictureResolver so that Optional.empty() is returned for empty commerce URLs.

(CMS-25296)