ProjectExplorer: Always compile WinDebugInterface

Makes it easier to re-shuffle calling code on non-Windows.

Change-Id: Ia6d7e313e9eb42fc7b19a469c1a6f33d226d1e88
Reviewed-by: David Schulz <david.schulz@qt.io>
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/plugins/projectexplorer/appoutputpane.cpp

@@ -794,14 +794,12 @@ void AppOutputPane::slotRunControlFinished2(RunControl *sender)
 
     ProjectExplorerPlugin::updateRunActions();
 
-#ifdef Q_OS_WIN
     const bool isRunning = Utils::anyOf(m_runControlTabs, [](const RunControlTab &rt) {
         return rt.runControl && rt.runControl->isRunning();
     });
-    if (!isRunning)
-        WinDebugInterface::instance()->stop();
-#endif
 
+    if (!isRunning)
+        WinDebugInterface::stop();
 }
 
 bool AppOutputPane::canNext() const