Store full game for singleplayer, add more validation (#2031)

## Description:

onunload allows up to 64kb, but reducing the number of hash messages and
compressing using gzip, we can reduce the GameRecord size to stay under
64kb. I played a 10 minute game and the compressed GameRecord was only a
few kb.

Also verify the game is singleplayer and has only 1 player

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

evan

src/client/ClientGameRunner.ts

@@ -271,7 +271,7 @@ export class ClientGameRunner {
           this.lobby.clientID,
         );
         console.error(gu.stack);
-        this.stop(true);
+        this.stop();
         return;
       }
       this.transport.turnComplete();
@@ -361,12 +361,12 @@ export class ClientGameRunner {
     this.transport.connect(onconnect, onmessage);
   }
 
-  public stop(saveFullGame: boolean = false) {
+  public stop() {
     if (!this.isActive) return;
 
     this.isActive = false;
     this.worker.cleanup();
-    this.transport.leaveGame(saveFullGame);
+    this.transport.leaveGame();
     if (this.connectionCheckInterval) {
       clearInterval(this.connectionCheckInterval);
       this.connectionCheckInterval = null;