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MINOR: [Go] Add gRPC status details to sample Flight SQL server (#37026)



### Rationale for this change

Needed to test apache/arrow-adbc#963.

### What changes are included in this PR?

Have the SQLite Flight SQL server sample emit a gRPC status detail.

### Are these changes tested?

No.

### Are there any user-facing changes?

No.

Authored-by: David Li <li.davidm96@gmail.com>
Signed-off-by: David Li <li.davidm96@gmail.com>