op-e2e: Disable proposer in dispute game tests (#11431)

The games being tested are created manually and the automated proposals at best waste time and can interfere with tsts like TestHighestActedL1BlockMetric which expects the challenger to acton all games.

op-e2e/faultproofs/output_alphabet_test.go

@@ -303,7 +303,7 @@ func TestHighestActedL1BlockMetric(t *testing.T) {
 	t.Cleanup(sys.Close)
 
 	disputeGameFactory := disputegame.NewFactoryHelper(t, ctx, sys)
-	honestChallenger := disputeGameFactory.StartChallenger(ctx, "Honest", challenger.WithAlphabet(), challenger.WithFastGames(), challenger.WithPrivKey(sys.Cfg.Secrets.Alice))
+	honestChallenger := disputeGameFactory.StartChallenger(ctx, "Honest", challenger.WithAlphabet(), challenger.WithPrivKey(sys.Cfg.Secrets.Alice))
 
 	game1 := disputeGameFactory.StartOutputAlphabetGame(ctx, "sequencer", 1, common.Hash{0xaa})
 	sys.AdvanceTime(game1.MaxClockDuration(ctx))

op-e2e/faultproofs/util.go

@@ -54,8 +54,8 @@ func StartFaultDisputeSystem(t *testing.T, opts ...faultDisputeConfigOpts) (*op_
 	cfg.DeployConfig.SequencerWindowSize = 4
 	cfg.DeployConfig.FinalizationPeriodSeconds = 2
 	cfg.SupportL1TimeTravel = true
-	cfg.DeployConfig.L2OutputOracleSubmissionInterval = 1
-	cfg.NonFinalizedProposals = true // Submit output proposals asap
+	// Disable proposer creating fast games automatically - required games are manually created
+	cfg.DisableProposer = true
 	for _, opt := range opts {
 		opt(&cfg)
 	}

op-e2e/setup.go

@@ -271,6 +271,9 @@ type SystemConfig struct {
 	// If the proposer can make proposals for L2 blocks derived from L1 blocks which are not finalized on L1 yet.
 	NonFinalizedProposals bool
 
+	// Explicitly disable proposer, for tests that don't want dispute games automatically created
+	DisableProposer bool
+
 	// Explicitly disable batcher, for tests that rely on unsafe L2 payloads
 	DisableBatcher bool
 
@@ -885,9 +888,11 @@ func (cfg SystemConfig) Start(t *testing.T, _opts ...SystemConfigOption) (*Syste
 	if err != nil {
 		return nil, fmt.Errorf("unable to setup l2 output submitter: %w", err)
 	}
+	if !cfg.DisableProposer {
 		if err := proposer.Start(context.Background()); err != nil {
 			return nil, fmt.Errorf("unable to start l2 output submitter: %w", err)
 		}
+	}
 	sys.L2OutputSubmitter = proposer
 
 	// batcher defaults if unset