getStateEvent should return any (#2032)

* getStateEvent returns any

getStateEvent returns the content of an event, not the whole state event as per https://matrix.org/docs/spec/client_server/r0.6.0#get-matrix-client-r0-rooms-roomid-state-eventtype-statekey

* Make the return type Record<string, any>

Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>

Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>

src/client.ts

@@ -6613,7 +6613,7 @@ export class MatrixClient extends EventEmitter {
         eventType: string,
         stateKey: string,
         callback?: Callback,
-    ): Promise<IStateEventWithRoomId> {
+    ): Promise<Record<string, any>> {
         const pathParams = {
             $roomId: roomId,
             $eventType: eventType,