Utils: More explicit host os use to make it stand out

Quite a few of the uses are actually wrong, but are better visible
now and therefore more likely to be fixed.

Change-Id: Ia51f7d6eb1b2d3a9c9f73d67dabacfd227c44b15
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/plugins/coreplugin/fileutils.cpp

@@ -76,7 +76,8 @@ void FileUtils::showInGraphicalShell(QWidget *parent, const FilePath &pathIn)
         const QString folder = fileInfo.isDir() ? fileInfo.absoluteFilePath() : fileInfo.filePath();
         const QString app = UnixUtils::fileBrowser(ICore::settings());
         QStringList browserArgs = ProcessArgs::splitArgs(
-                    UnixUtils::substituteFileBrowserParameters(app, folder));
+                    UnixUtils::substituteFileBrowserParameters(app, folder),
+                    HostOsInfo::hostOs());
         QString error;
         if (browserArgs.isEmpty()) {
             error = Tr::tr("The command for file browser is not set.");