Game creation rate: 1 minute -> 2 minutes 🔧 (#3259)

## Description:

Can we maintain a one-minute game creation rate with three times as many
lobbies?

I don’t think so - we should allow more time for players to join.

It still shouldn’t bore players, since they can also join the special
mix lobby. That lobby includes both FFA and team games and fills more
quickly due to the higher frequency of compact-map matches (the Wonder
PR https://github.com/openfrontio/OpenFrontIO/pull/3224 needs to be
merged for that).

## 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:

FloPinguin

src/core/configuration/DefaultConfig.ts

@@ -119,7 +119,7 @@ export abstract class DefaultServerConfig implements ServerConfig {
     return 100;
   }
   gameCreationRate(): number {
-    return 60 * 1000;
+    return 2 * 60 * 1000;
   }
 
   workerIndex(gameID: GameID): number {