fix: fail closed missing provider group policy across message channels (#23367) (thanks @bmendonca3)

src/plugin-sdk/index.ts

@@ -132,6 +132,10 @@ export type {
   MSTeamsReplyStyle,
   MSTeamsTeamConfig,
 } from "../config/types.js";
+export {
+  resolveRuntimeGroupPolicy,
+  type RuntimeGroupPolicyResolution,
+} from "../config/runtime-group-policy.js";
 export {
   DiscordConfigSchema,
   GoogleChatConfigSchema,