Make the primary email hash available

It can be trivially calculated by anyone who has access to the
email, so there's no need to keep it secret from the user, and the
qa-customs page needs access to it.

src/app/functions/server/sanitize.ts

@@ -48,6 +48,7 @@ export type SanitizedSubscriberRow = SanitizationMarker &
     | "id"
     | "primary_email"
     | "primary_verified"
+    | "primary_sha1"
     | "created_at"
     | "updated_at"
     | "fx_newsletter"
@@ -77,6 +78,7 @@ export function sanitizeSubscriberRow(
     id: subscriber.id,
     primary_email: subscriber.primary_email,
     primary_verified: subscriber.primary_verified,
+    primary_sha1: subscriber.primary_sha1,
     created_at: subscriber.created_at,
     updated_at: subscriber.updated_at,
     fx_newsletter: subscriber.fx_newsletter,