MSC4380: Invite blocking (#31268)

* Initial implementation of MSC4380

* fix lint

* Update InviteRulesAccountSetting-test

* add some docs

* `block_all` -> `default_action`

* Add a unit test for BlockInvitesConfigController

src/@types/invite-rules.ts

@@ -6,6 +6,7 @@ Please see LICENSE files in the repository root for full details.
 */
 
 export const INVITE_RULES_ACCOUNT_DATA_TYPE = "org.matrix.msc4155.invite_permission_config";
+export const MSC4380_INVITE_RULES_ACCOUNT_DATA_TYPE = "org.matrix.msc4380.invite_permission_config";
 
 export interface InviteConfigAccountData {
     allowed_users?: string[];

src/@types/matrix-js-sdk.d.ts

@@ -15,7 +15,11 @@ import type { EmptyObject } from "matrix-js-sdk/src/matrix";
 import type { DeviceClientInformation } from "../utils/device/types.ts";
 import type { UserWidget } from "../utils/WidgetUtils-types.ts";
 import { type MediaPreviewConfig } from "./media_preview.ts";
-import { type INVITE_RULES_ACCOUNT_DATA_TYPE, type InviteConfigAccountData } from "./invite-rules.ts";
+import {
+    type INVITE_RULES_ACCOUNT_DATA_TYPE,
+    type InviteConfigAccountData,
+    type MSC4380_INVITE_RULES_ACCOUNT_DATA_TYPE,
+} from "./invite-rules.ts";
 
 // Extend Matrix JS SDK types via Typescript declaration merging to support unspecced event fields and types
 declare module "matrix-js-sdk/src/types" {
@@ -91,6 +95,9 @@ declare module "matrix-js-sdk/src/types" {
 
         // MSC4155: Invite filtering
         [INVITE_RULES_ACCOUNT_DATA_TYPE]: InviteConfigAccountData;
+
+        [MSC4380_INVITE_RULES_ACCOUNT_DATA_TYPE]: { default_action?: "allow" | "block" };
+
         "io.element.msc4278.media_preview_config": MediaPreviewConfig;
 
         // Indicate whether recovery is enabled or disabled