Step Out action is incorrectly enabled when the active thread has only one stack frame

Does this issue occur when all extensions are disabled?: Yes

- VS Code Version: 1.137.0 Date: 2026-09-08T13:43:59-07:00
- OS Version: Windows 11 version 25H2 (OS Build 26200.7840)

Steps to Reproduce:

1. In Visual Studio Code, debug a program. (In my environment, I debug a sample program on my board using GDB.)
2. Suspend the program at a location where there is no parent stack frame.
3. Check the status of the Step Out button in the Debug toolbar.

EXPECTED: The Step Out button should be disabled because the active thread has only one stack frame, so there is no parent stack frame to step out to.

ACTUAL: The Step Out button is enabled. When clicking the button, Visual Studio Code displays an unexpected error because the program cannot step out from the current stack frame.