hsmd: fix HSM sent an unknown message type error

[sangbida]

Fixes #8726

When we enter the wrong passphrase hsmd crashes like this with an unknown message type:

lightning_hsmd: Failed to load hsm_secret: Wrong passphrase (version v25.12rc1-7-g7713a42-modded) 0x102ba44bf ???
        send_backtrace+0x4f:0
0x102b0900f status_failed
        common/status.c:207
0x102af1a37 hsmd_send_init_reply_failure
        hsmd/hsmd.c:301
0x102af1497 load_hsm
        hsmd/hsmd.c:446
0x102af1497 init_hsm
        hsmd/hsmd.c:548
0x102b29e63 next_plan
        ccan/ccan/io/io.c:60
0x102b29e63 do_plan
        ccan/ccan/io/io.c:422
0x102b29d8b io_ready
        ccan/ccan/io/io.c:439
0x102b2b4bf io_loop
        ccan/ccan/io/poll.c:470
0x102af0a83 main
        hsmd/hsmd.c:886
lightningd: HSM sent unknown message type

This change swaps write_all() to wire_synce_write() because write_all() is missing the wire protocol length prefix. Something to note is that we will still see a crash dump here because we are finishing with a status_failed() which produces a crash dump, this consistent with other hsm failures, we don't want to be starting up if we've been given the wrong passphrase. So the dump should look like this now:

lightningd: HSM initialization failed: Failed to load hsm_secret: Wrong passphrase 0x1003804b7 ???
        send_backtrace+0x4f:0
0x1002e5007 status_failed
        common/status.c:207
0x1002cda2f hsmd_send_init_reply_failure
        hsmd/hsmd.c:301
0x1002cd497 load_hsm
        hsmd/hsmd.c:446
0x1002cd497 init_hsm
        hsmd/hsmd.c:548
0x100305e5b next_plan
        ccan/ccan/io/io.c:60
0x100305e5b do_plan
        ccan/ccan/io/io.c:422
0x100305d83 io_ready
        ccan/ccan/io/io.c:439
0x1003074b7 io_loop
        ccan/ccan/io/poll.c:470
0x1002cca83 main
        hsmd/hsmd.c:886

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