merge: make sure that `sensitive` is a boolean - fixes #596 (!590)

View MR for information: https://activitypub.software/TransFem-org/Sharkey/-/merge_requests/590

Closes #596

Approved-by: fEmber <acomputerdog@gmail.com>
Approved-by: Marie <marie@kaifa.ch>

packages/backend/src/core/activitypub/models/ApImageService.ts

@@ -82,7 +82,7 @@ export class ApImageService {
 			url: image.url,
 			user: actor,
 			uri: image.url,
-			sensitive: image.sensitive,
+			sensitive: !!(image.sensitive),
 			isLink: !shouldBeCached,
 			comment: truncate(image.name ?? undefined, DB_MAX_IMAGE_COMMENT_LENGTH),
 		});