wrong scp command with ipv6 address

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. What did you do?

tiup deploy yaml:

global:
  user: "user"
  systemd_mode: "user"
  deploy_dir: "/data00/tikv/tikv-deploy"
  data_dir: "/data00/tikv/tikv-data"
  arch: "amd64"

server_configs:
  tikv:
    server.grpc-compression-type: gzip
    raftstore.raft-entry-max-size: 1GB
    raftstore.raft-max-size-per-msg: 1GB
    server.max-grpc-send-msg-len: 1073741824
    
pd_servers:
  - host: "fdbd:dc0c:1:121a::51"
  - .....
 tikv_servers:
  - host: "fdbd:dc0c:1:121a::51"
    port: 20160
    status_port: 20180
    deploy_dir: "/data00/tikv/tikv-deploy/tikv-20160"
    data_dir: "/data00/tikv/tikv-data/tikv-20160"
    log_dir: "/data00/tikv/tikv-20160/log"
  - ...

tiup cluster check deploy-online.yaml --user user --ssh=system

2. What did you expect to see?

everything is good.

3. What did you see instead?

Error: failed to scp /home/user/.tiup/storage/cluster/packages/insight-v0.4.2-linux-amd64.tar.gz to fdbd:dc0c:1:121a::51:/tmp/tiup/bin/insight-v0.4.2-linux-amd64.tar.gz: executor.ssh.execute_failed: Failed to transfer file over SCP for 'user@fdbd:dc0c:1:121a::51:22' {ssh_stderr: ssh: Could not resolve hostname fdbd: Name or service not known
lost connection
, ssh_stdout: , ssh_command: scp -r -o StrictHostKeyChecking=no -o ConnectTimeout=5 /home/user/.tiup/storage/cluster/packages/insight-v0.4.2-linux-amd64.tar.gz user@fdbd:dc0c:1:121a::51:/tmp/tiup/bin/insight-v0.4.2-linux-amd64.tar.gz}, cause: exit status 1

it seems that the problem is caused by missing '[]' at ipv6 address in scp command

4. What version of TiUP are you using (tiup --version)?

$ tiup --version
1.16.2 tiup
Go Version: go1.21.13
Git Ref: v1.16.2
GitHash: 678c52de0c0ef30634b8ba7302a8376caa95d50d

Start by tracing the tiup cluster check path that constructs the SCP command for hosts from the YAML configuration, using the IPv6 reproduction in this issue. Verify how the host is formatted before execution. Done means the generated SCP command brackets IPv6 addresses and the transfer succeeds for the provided configuration.