[LyX/master] Fix theme import function

[Pavel Sanda]

On Mon, Mar 10, 2025 at 11:54:06AM -0400, Richard Kimberly Heck wrote:
> > On Mon, Mar 10, 2025 at 10:55:31AM +0100, Pavel Sanda wrote:
> > src/frontends/qt/GuiApplication.cpp:#include <QFileInfo>
> > src/frontends/qt/GuiApplication.cpp:                QFileInfo fi(uifiles[i]);
> > src/frontends/qt/GuiDocument.cpp:                   QString fn = QFileInfo(it.next()).fileName();
> > src/frontends/qt/GuiLyXFiles.cpp:           QFileInfo const info = QFileInfo(it.key());
> > src/frontends/qt/GuiPrefs.cpp:#include <QFileInfo>
> > src/frontends/qt/GuiTabularCreate.cpp:                      QString fn = QFileInfo(it.next()).fileName();

All these seem actually as fair use at it's inside Qt related manipulations where we would ba just adding fromqstr / toqstr around to get FileName.

> > src/support/TempFile.cpp:#include <QFileInfo>
> > src/support/TempFile.cpp:   QFileInfo tmp_fi(QDir(toqstr(temp_dir.absoluteFilePath())),
> > src/support/TempFile.cpp:   QFileInfo tmp_fi(QDir(toqstr(package().temp_dir().absoluteFilePath())),
> > src/support/filetools.cpp:  QFileInfo tmp_fi(QDir(toqstr(tempdir.absFileName())), toqstr(mask));

These are more borderline, but still reasonable use, as they use specifics (like constructor calls) not provided by FileName itself.
So I left things as they are now.

Pavel