patch 9.1.1391: Vim does not have a vertical tabpanel

Problem:  Vim does not have a tabpanel
Solution: include the tabpanel feature
          (Naruhiko Nishino, thinca)

closes: #17263

Co-authored-by: thinca <thinca@gmail.com>
Signed-off-by: Naruhiko Nishino <naru123456789@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/fileio.c b/src/fileio.c
index f6e35ab..2c6c40e 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -3534,6 +3534,9 @@
     }
     status_redraw_all();
     redraw_tabline = TRUE;
+#if defined(FEAT_TABPANEL)
+    redraw_tabpanel = TRUE;
+#endif
 #if defined(FEAT_PROP_POPUP) && defined(FEAT_QUICKFIX)
     popup_update_preview_title();
 #endif