Some functional tests fail when block listeners are registered "out of order"

[valentinewallace]

When this line and line 893 are swapped, 23 of the functional tests fail. Seems overly fragile and was a bit confusing to debug.

Here are the failures:

failures:
    ln::functional_tests::channel_monitor_network_test
    ln::functional_tests::claim_htlc_outputs_shared_tx
    ln::functional_tests::claim_htlc_outputs_single_tx
    ln::functional_tests::revoked_output_claim
    ln::functional_tests::test_bump_penalty_txn_on_remote_commitment
    ln::functional_tests::test_bump_penalty_txn_on_revoked_commitment
    ln::functional_tests::test_bump_penalty_txn_on_revoked_htlcs
    ln::functional_tests::test_bump_txn_sanitize_tracking_maps
    ln::functional_tests::test_claim_on_remote_revoked_sizeable_push_msat
    ln::functional_tests::test_duplicate_htlc_different_direction_onchain
    ln::functional_tests::test_duplicate_payment_hash_one_failure_one_success
    ln::functional_tests::test_dynamic_spendable_outputs_local_htlc_success_tx
    ln::functional_tests::test_dynamic_spendable_outputs_local_htlc_timeout_tx
    ln::functional_tests::test_htlc_on_chain_success
    ln::functional_tests::test_htlc_on_chain_timeout
    ln::functional_tests::test_justice_tx
    ln::functional_tests::test_onchain_to_onchain_claim
    ln::functional_tests::test_set_outpoints_partial_claiming
    ln::functional_tests::test_static_spendable_outputs_justice_tx_revoked_commitment_tx
    ln::functional_tests::test_static_spendable_outputs_justice_tx_revoked_htlc_success_tx
    ln::functional_tests::test_static_spendable_outputs_justice_tx_revoked_htlc_timeout_tx
    ln::functional_tests::test_static_spendable_outputs_preimage_tx
    ln::functional_tests::test_sweep_outbound_htlc_failure_update

[tnull]

Closing this as hard to tell what the referenced lines were by now.