A set of fixes and upgrades

* writeToDownloads: Add missing await
* Remove window.isFocused() - not used anywhere!
* Update typescript, p-queue, make necessary changes to fix build
* Slow down sender certificate retries with no existing cert
* Slow down signed prekey refreshes when unlinked - 5s -> 5m
* Update protobufjs to 4.1.2

ts/components/Lightbox.tsx

@@ -188,10 +188,6 @@ export class Lightbox extends React.Component<Props, State> {
   public readonly focusRef = React.createRef<HTMLDivElement>();
   public previousFocus: any;
 
-  public state = {
-    videoTime: undefined,
-  };
-
   public componentDidMount() {
     this.previousFocus = document.activeElement;
 
@@ -299,7 +295,7 @@ export class Lightbox extends React.Component<Props, State> {
             ) : null}
           </div>
         </div>
-        {isViewOnce && is.number(videoTime) ? (
+        {isViewOnce && videoTime && is.number(videoTime) ? (
           <div style={styles.navigationContainer}>
             <div style={styles.timestampPill}>{formatDuration(videoTime)}</div>
           </div>

ts/components/emoji/EmojiButton.tsx

@@ -10,7 +10,7 @@ import {
 } from './EmojiPicker';
 import { LocalizerType } from '../../types/Util';
 
-export type EmojiPickDataType = EmojiPickDataType;
+export { EmojiPickDataType };
 
 export type OwnProps = {
   readonly i18n: LocalizerType;

ts/components/emoji/EmojiPicker.tsx

@@ -91,7 +91,7 @@ export const EmojiPicker = React.memo(
 
       const debounceSearchChange = React.useMemo(
         () =>
-          debounce(query => {
+          debounce((query: string) => {
             setSearchText(query);
             setScrollToRow(0);
           }, 200),

ts/shims/textsecure.ts

@@ -37,12 +37,15 @@ interface ShimmedWindow extends Window {
   ConversationController: ConversationControllerType;
 }
 
+const unknownWindow = window as unknown;
+const shimmedWindow = unknownWindow as ShimmedWindow;
+
 export function sendStickerPackSync(
   packId: string,
   packKey: string,
   installed: boolean
 ) {
-  const { ConversationController, textsecure, log } = window as ShimmedWindow;
+  const { ConversationController, textsecure, log } = shimmedWindow;
   const ourNumber = textsecure.storage.user.getNumber();
   const { wrap, sendOptions } = ConversationController.prepareForSend(
     ourNumber,