Unable to use private key for HD wallets

[smk762]

Describe the bug
I tried using a KMD private key in MM2.json as below:

{
    "gui": "MM2CLI",
    "netid": 8762,
    "seednodes": ["seed15.komodo.earth", "seed16.komodo.earth"],
    "rpc_password": "RPC_CONTRoL_USERP@SSW0RD",
    "hd_account_id": 0,
    "passphrase": "UqMgxk7ySPNQ4r9nKAFPjkXy6r5t898yhuNCjSZJLg3RAM4WW1m9"
}

And had the following response in logs when attempting to launch ./mm2:

09 12:04:53, mm2:266] AtomicDEX API 1.0.6-beta_33ba72f DT 2023-08-07T13:20:03+03:00
09 12:04:53, mm2_main::mm2::lp_native_dex:425] INFO Version: 1.0.6-beta_33ba72f DT 2023-08-07T13:20:03+03:00
09 12:04:53, mm2_core::mm_ctx:353] INFO MmCtx (2953133215) has been dropped
09 12:04:53, log:1028] LogState] Bye!
09 12:04:53, mm2:269] mm2:340] mm2:145] lp_native_dex:435] global_hd_ctx:35] privkey:120] Invalid passphrase: Error parsing passphrase: invalid word in phrase

Likely this is because the private key is not in the bip39 wordlist. Is it possible to allow using valid private keys?

[shamardy]

Thanks for opening the issue. Will investigate this as part of the HD wallet fixes #1838