patch 8.2.0747: cannot forcefully close all popups

Problem:    Cannot forcefully close all popups.
Solution:   Add the "force" argument to popup_clear().  Use it after running a
            test.  Put back the check for a popup when editing a file.
diff --git a/src/misc2.c b/src/misc2.c
index 0ab6caf..50efde7 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -1069,13 +1069,9 @@
 # if defined(FEAT_BEVAL_TERM)
     ui_remove_balloon();
 # endif
-# if defined(FEAT_PROP_POPUP)
+# ifdef FEAT_PROP_POPUP
     if (curwin != NULL)
-    {
-	while (popup_is_popup(curwin))
-	    popup_close_with_retval(curwin, 0);
-	close_all_popups();
-    }
+	close_all_popups(TRUE);
 # endif
 
     // Clear user commands (before deleting buffers).