Account for qmake.bat script for Qt 6 targets

Qt 6 targets that are built with CMake have a qmake.bat instead
of qmake.exe, while they can be registered from the Qt installer
using QC's sdktool, it's not yet possible to select a new version
manually because the FileDialog selection offers only qmake*.exe.

Fixes: QTCREATORBUG-24721
Change-Id: I647be1e0fba2f306402b8dbed747e9614a4eb0ea
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/libs/utils/buildablehelperlibrary.cpp

@@ -179,7 +179,13 @@ QStringList BuildableHelperLibrary::possibleQMakeCommands()
     // On Unix some distributions renamed qmake with a postfix to avoid clashes
     // On OS X, Qt 4 binary packages also has renamed qmake. There are also symbolic links that are
     // named "qmake", but the file dialog always checks against resolved links (native Cocoa issue)
-    return QStringList(HostOsInfo::withExecutableSuffix("qmake*"));
+    QStringList commands(HostOsInfo::withExecutableSuffix("qmake*"));
+
+    // Qt 6 CMake built targets, such as Android, are dependent on the host installation
+    // and use a script wrapper around the host qmake executable
+    if (HostOsInfo::isWindowsHost())
+        commands.append("qmake*.bat");
+    return commands;
 }
 
 // Copy helper source files to a target directory, replacing older files.