Schema update

Author: hughns

frontend/schema.graphql

@@ -1757,6 +1757,9 @@ type SiteConfig implements Node {
   Whether users can log in with their email address.
   """
   loginWithEmailAllowed: Boolean!
+  """
+  Experimental plan management iframe URI.
+  """
   planManagementIframeUri: String
   """
   The ID of the site configuration.

frontend/src/gql/graphql.ts

@@ -1296,6 +1296,7 @@ export type SiteConfig = Node & {
   passwordLoginEnabled: Scalars['Boolean']['output'];
   /** Whether passwords are enabled and users can register using a password. */
   passwordRegistrationEnabled: Scalars['Boolean']['output'];
+  /** Experimental plan management iframe URI. */
   planManagementIframeUri?: Maybe<Scalars['String']['output']>;
   /** The URL to the privacy policy. */
   policyUri?: Maybe<Scalars['Url']['output']>;