chore:ifaceprom-1599 should be ifaceprom-1559

[luoliwoshang]

because this regressstion test is work for #1559

[luoliwoshang]

/code

[xgopilot]

Completed renaming ifaceprom-1599 to ifaceprom-1559 ✅

Successfully renamed the test directory from ifaceprom-1599 to ifaceprom-1559 to correctly reflect that this regression test is for issue #1559.

Changes made:

• Renamed directory _demo/go/ifaceprom-1599 → _demo/go/ifaceprom-1559
• Updated import path in main.go to use the new directory name

Pull Request: #1579