rebuild tag index with old schema version value

[HarrisChu]

refer https://discuss.nebula-graph.com.cn/t/topic/6376

(root@nebula) [nba]> lookup on player yield player.name, player.age | limit 2
+------------------+------------------+------------+
| VertexID         | player.name      | player.age |
+------------------+------------------+------------+
| "Cory Joseph"    | "Cory Joseph"    | 27         |
+------------------+------------------+------------+
| "Damian Lillard" | "Damian Lillard" | 28         |
+------------------+------------------+------------+
Got 2 rows (time spent 1312/9496 us)

Fri, 05 Nov 2021 09:57:56 CST

(root@nebula) [nba]>  ALTER TAG player ADD (new_name string);

(root@nebula) [nba]> create tag index player_new_name on player(new_name(10))
Execution succeeded (time spent 24488/33469 us)

Fri, 05 Nov 2021 09:58:59 CST

(root@nebula) [nba]> lookup on player yield player.name, player.age | limit 2
+----------+-------------+------------+
| VertexID | player.name | player.age |
+----------+-------------+------------+
+----------+-------------+------------+
Empty set (time spent 1338/11633 us)

Fri, 05 Nov 2021 09:59:11 CST

storage log

E1105 01:39:26.888957 13181 IndexKeyUtils.cpp:170] prop error by : new_name. status : Unknown prop
W1105 01:39:26.888981 13181 RebuildTagIndexTask.cpp:132] Collect index value failed
E1105 01:39:26.888958 13182 IndexKeyUtils.cpp:170] prop error by : new_name. status : Unknown prop
W1105 01:39:26.889010 13182 RebuildTagIndexTask.cpp:132] Collect index value failed

expected:
When rebuild index, if the schema version in value is not the latest, keep the same behavior with fetch
e.g.

(root@nebula) [nba]> fetch prop on * "Cory Joseph"
+---------------------------------------------------------------------------+
| vertices_                                                                 |
+---------------------------------------------------------------------------+
| ("Cory Joseph" :player{age: 27, name: "Cory Joseph", new_name: __NULL__}) |
+---------------------------------------------------------------------------+
Got 1 rows (time spent 1024/4545 us)

Fri, 05 Nov 2021 10:01:17 CST