gf gen service: When generating the service, the previous sysin0 alias will be overwritten as sysin, and the logic will not be modified.

### Go version

go version go 1.20.1 darwin/arm64

### GoFrame version

2.7.2

### Can this bug be reproduced with the latest release?

Option Yes

### What did you do?

直接运行 gf gen service 就可以重现

### What did you see happen?

直接运行 gf gen service 就可以重现

### What did you expect to see?

直接运行 gf gen service 就可以重现