Match edge sentence return two records when we do the follow nGQL

[Milittle]

Please check the FAQ documentation before raising an issue

(root@nebula) [basketballplayer]> match ()-[e:FileRead]-() return e limit 10;
+------------------------------------------------------------------------------------------------------------------+
| e                                                                                                                |
+------------------------------------------------------------------------------------------------------------------+
| [:FileRead "100"->"101" @0 {event_startTs: 1677132344, file_uuid: "001", host_uuid: "001", process_uuid: "001"}] |
| [:FileRead "100"->"101" @0 {event_startTs: 1677132344, file_uuid: "001", host_uuid: "001", process_uuid: "001"}] |
+------------------------------------------------------------------------------------------------------------------+

Describe the bug (required)

double records for edge indexScan

Your Environments (required)

• OS: uname -a
• Compiler: g++ --version or clang++ --version
• CPU: lscpu
• Commit id (e.g. a3ffc7d8)

How To Reproduce(required)

Steps to reproduce the behavior:

1. Step 1
   create one edge
2. Step 2
   create edge index
3. Step 3
   then insert one data

Expected behavior

return one records

[xtcyclist]

This result is correct. The returned e is the shared edge from two different matched patterns. There are two different matched patterns since no conditions on vertices or the direction of edges have been specified in the query.