fix(lobehub,otbr): increase heap limit and fix bind9 enable

- lobehub: bump --max-old-space-size from 4096 to 8192 (build OOMs at ~6GB)
- openthread-br: handle linked unit file bind9.service on Debian 13

ct/lobehub.sh

@@ -47,7 +47,7 @@ function update_script() {
 
     msg_info "Building Application"
     cd /opt/lobehub
-    export NODE_OPTIONS="--max-old-space-size=4096"
+    export NODE_OPTIONS="--max-old-space-size=8192"
     $STD pnpm install
     $STD pnpm run build:docker
     unset NODE_OPTIONS