The counter value in subscribe message

### vSomeip Version

v3.3.8

### Boost Version

1.81

### Environment

Android

### Describe the bug

I would like to confirm the counter value which sends in SubscribeAck.
After server receives subscribe message, it seems that server sends SubscribeAck with same counter value.
In vsomeip v2.14.16, SubscribeAck sends same value. However SubscribeAck can send only "0" in v3.3.8.
The specification says that Is used to differentiate identical Subscribe Eventgroups of the same subscriber.

What is the background in this modify.
Will SubscribeAck be able to send same value in the future?


### Reproduction Steps

_No response_

### Expected behaviour

_No response_

### Logs and Screenshots

_No response_

The issue names no source files, tests, or reproducible steps. Start by locating the SubscribeAck counter handling in the v3.3.8 implementation and compare it with v2.14.16 and the relevant specification. Done means establishing the intended counter behavior and documenting whether the current value is correct.

Written by the indexing model from the issue text.