Use network setting for max TTL extension of a contract.

[fnando]

What

$ stellar contract extend --id hello --ledgers-to-extend 1000000 --very-verbose
2025-10-14T17:31:27.743780Z DEBUG soroban_cli::upgrade_check: start upgrade check
2025-10-14T17:31:27.743782Z TRACE soroban_cli::commands::contract::extend: network=Network { rpc_url: "http://localhost:8000/rpc", rpc_headers: [], network_passphrase: "Standalone Network ; February 2017" }
2025-10-14T17:31:27.745895Z DEBUG soroban_cli::upgrade_check: finished upgrade check
2025-10-14T17:31:27.778527Z TRACE soroban_cli::commands::contract::extend: Checking ledgers_to_extend: requested=1000000, max_entry_ttl=3110400
2025-10-14T17:31:27.782372Z TRACE soroban_cli::assembled: Simulation transaction envelope: AAAAAgAAAADYcrin+iEjGmimHUdHO1ayN/n4bkbl6AqSvsit9+nL8QAAAGQAAAeDAAAABQAAAAAAAAAAAAAAAQAAAAAAAAAZAAAAAAAPQkAAAAABAAAAAAAAAAEAAAAGAAAAARmrn8vywhJ+XzzgMQR231dsEuSxcTryO88teWvHrvTfAAAAFAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
2025-10-14T17:31:27.790882Z TRACE soroban_cli::assembled: SimulateTransactionResponse {
    min_resource_fee: 59414,
    cost: Cost {
        cpu_insns: 0,
        mem_bytes: 0,
    },
    results: [],
    transaction_data: "AAAAAAAAAAEAAAAGAAAAARmrn8vywhJ+XzzgMQR231dsEuSxcTryO88teWvHrvTfAAAAFAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAA6BY=",
    events: [],
    restore_preamble: None,
    state_changes: None,
    latest_ledger: 2609,
    error: None,
}
ℹ️ Signing transaction: a103de00a0515907d3902e724874f3089e4bd11b4215b43a0770ee3fee98f8ac
New ttl ledger: 1002611

$ stellar contract extend --id hello --ledgers-to-extend 3110401 --very-verbose
2025-10-14T17:31:44.676002Z DEBUG soroban_cli::upgrade_check: start upgrade check
2025-10-14T17:31:44.676054Z TRACE soroban_cli::commands::contract::extend: network=Network { rpc_url: "http://localhost:8000/rpc", rpc_headers: [], network_passphrase: "Standalone Network ; February 2017" }
2025-10-14T17:31:44.676169Z DEBUG soroban_cli::upgrade_check: finished upgrade check
2025-10-14T17:31:44.709282Z TRACE soroban_cli::commands::contract::extend: Checking ledgers_to_extend: requested=3110401, max_entry_ttl=3110400
❌ error: Ledgers to extend (3110401) exceeds network maximum (3110400)

Why

Close #1204

Known limitations

N/A