[FIX] creating room with federated member (#23347)

* Fix creating room with federated member

When creating a room with a federated member the local user only has the attributes "_id" and "username" for the event normalizeUser.
In there the attribute emails is called but only defined two lines down.
Moved the definition before the call to resolve  "undefined user" error message on room creation.

* remove empty line (no traling spaces)

app/federation/server/normalizers/user.js

@@ -27,11 +27,10 @@ const normalizeUser = (originalResource) => {
 	// Get only what we need, non-sensitive data
 	const resource = _.pick(originalResource, '_id', 'username', 'type', 'emails', 'name', 'federation', 'isRemote', 'createdAt', '_updatedAt');
 
-	const email = resource.emails[0].address;
-
 	resource.emails = [{
 		address: `${ resource._id }@${ getFederationDomain() }`,
 	}];
+	const email = resource.emails[0].address;
 
 	resource.active = true;
 	resource.roles = ['user'];