shibarium heimdall: fix REST listen-address flag (--laddr, not --rest-server.addr)

heimdall crash-looped on 'unknown flag: --rest-server.addr'. Per heimdalld start
--help, the bone-fork binary takes --rest-server (bool) to enable REST/LCD and
--laddr (default tcp://0.0.0.0:1317) for its listen address — there is no
--rest-server.addr. Swap it. (The rest_server-injection + idempotent-init fixes
from the prior PR worked: init now skips re-init, fetches the heimdall-109 genesis,
no more 'rest_server already defined'.)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

shibarium/scripts/init.sh

@@ -107,15 +107,17 @@ ct_seed_priv_validator_state "$CMT_HOME"
 
 ct_log "Bootstrap complete. Starting heimdalld..."
 
-# Start heimdalld with REST server enabled
-# --rest-server enables the in-process REST/LCD server
-# --rest-server.addr binds REST to 0.0.0.0:1317
-# --rpc.laddr binds CometBFT RPC to 0.0.0.0:26657
-# --p2p.laddr binds P2P to 0.0.0.0:<P2P_PORT>
+# Start heimdalld with the in-process REST/LCD server enabled.
+# --rest-server  enables the REST/LCD server
+# --laddr        REST/LCD listen address (default tcp://0.0.0.0:1317) — NOT
+#                --rest-server.addr, which this heimdall build rejects as an
+#                "unknown flag".
+# --rpc.laddr    CometBFT RPC listen address (default is 127.0.0.1 — bind 0.0.0.0)
+# --p2p.laddr    P2P listen address on the salted P2P_PORT
 exec heimdalld start \
   --home "$CMT_HOME" \
   --chain "$CHAIN" \
   --rest-server \
-  --rest-server.addr=0.0.0.0:1317 \
+  --laddr=tcp://0.0.0.0:1317 \
   --rpc.laddr=tcp://0.0.0.0:26657 \
   --p2p.laddr=tcp://0.0.0.0:$P2P_PORT