Shuttle drone improvements (#16931)

Content.IntegrationTests/Tests/GameRules/StartEndGameRulesTest.cs

@@ -27,7 +27,7 @@ public sealed class StartEndGameRulesTest
         await server.WaitIdleAsync();
         var gameTicker = server.ResolveDependency<IEntitySystemManager>().GetEntitySystem<GameTicker>();
         var cfg = server.ResolveDependency<IConfigurationManager>();
-        Assert.That(cfg.GetCVar(CCVars.DisableGridFill), Is.False);
+        Assert.That(cfg.GetCVar(CCVars.GridFill), Is.False);
 
         await server.WaitAssertion(() =>
         {