doesn't display version in show hosts graph command

[HarrisChu]

steps:

1. using my repo tag to build graph, https://github.com/HarrisChu/nebula-graph/releases/tag/v2.1.0, sh package.sh -b v2.1.0
2. install nebula
3. run ./nebula-graphd -version

[vesoft@qa-tools bin]$ ./nebula-graphd -version
nebula-graphd version 2.1.0, Git: d1fa134c, Build Time: Jul  8 2021 10:38:32
This source code is licensed under Apache 2.0 License, attached with Common Clause Condition 1.0.

4. run show hosts graph in console.

(root@nebula) [(none)]> show hosts graph
+-------------+------+----------+---------+--------------+---------+
| Host        | Port | Status   | Role    | Git Info Sha | Version |
+-------------+------+----------+---------+--------------+---------+
| "127.0.0.1" | 9669 | "ONLINE" | "GRAPH" | "d1fa134c"   |         |
+-------------+------+----------+---------+--------------+---------+
Got 1 rows (time spent 821/3905 us)

expected:
show version in console.