[vte] widget: gtk4: Don't grab the focus on focus-in

[Christian Persch <chpe src gnome org>]

commit d7b1da6f8203a732fdc850b991236708adc0d52f
Author: Christian Persch <chpe src gnome org>
Date:   Tue Aug 9 21:08:06 2022 +0200

    widget: gtk4: Don't grab the focus on focus-in
    
    https://gitlab.gnome.org/GNOME/vte/-/issues/2555

 src/vte.cc | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/vte.cc b/src/vte.cc
index 4bf9587d..82613608 100644
--- a/src/vte.cc
+++ b/src/vte.cc
@@ -6957,7 +6957,10 @@ void
 Terminal::widget_focus_in()
 {
         m_has_focus = true;
+
+#if VTE_GTK == 3
         widget()->grab_focus();
+#endif
 
        /* We only have an IM context when we're realized, and there's not much
         * point to painting the cursor if we don't have a window. */