message: Pass the current language to Element Call
  This allows the Element Call to appear in the language used by the rest of the app.
diff: @@ -42,6 +42,7 @@ import WidgetStore from "../stores/WidgetStore";
  import { WidgetMessagingStore, WidgetMessagingStoreEvent } from "../stores/widgets/WidgetMessagingStore";
  import ActiveWidgetStore, { ActiveWidgetStoreEvent } from "../stores/ActiveWidgetStore";
  import PlatformPeg from "../PlatformPeg";
  +import { getCurrentLanguage } from "../languageHandler";
  const TIMEOUT_MS = 16000;
  @@ -626,7 +627,7 @@ export class ElementCall extends Call {
  private constructor(public readonly groupCall: MatrixEvent, client: MatrixClient) {
  // Splice together the Element Call URL for this call
  - const url = new URL(SdkConfig.get("element_call").url ?? DEFAULTS.element_call.url);
  + const url = new URL(SdkConfig.get("element_call").url ?? DEFAULTS.element_call.url!);
  url.pathname = "/room";
  const params = new URLSearchParams({
  embed: "",
  @@ -635,6 +636,7 @@ export class ElementCall extends Call {
  userId: client.getUserId()!,
  deviceId: client.getDeviceId(),
  roomId: groupCall.getRoomId()!,
  + lang: getCurrentLanguage().replace("_", "-"),
  });
  // Currently, the screen-sharing support is the same is it is for Jitsi
  if (!PlatformPeg.get().supportsJitsiScreensharing()) {
  