[nautilus] toolbar: Fix wrong cast of GtkMenuButton

[António Fernandes <antoniof src gnome org>]

commit 76c59b8ecb3ad86b0e3ceab9c9a1efe53c7713dc
Author: codeboybebop <codeboy bebop gmail com>
Date:   Sun Jul 17 22:06:30 2022 +0000

    toolbar: Fix wrong cast of GtkMenuButton
    
    In some parts of the code, operations_button was considered as a member
    of the child class of class GtkToggleButton. Which is incorrect in gtk4.
    Using visibility of popover gives the intended functionality.
    
    Fixes https://gitlab.gnome.org/GNOME/nautilus/-/issues/2313

 src/nautilus-toolbar.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/nautilus-toolbar.c b/src/nautilus-toolbar.c
index 81af953eb..d84742143 100644
--- a/src/nautilus-toolbar.c
+++ b/src/nautilus-toolbar.c
@@ -448,7 +448,7 @@ on_progress_info_finished (NautilusToolbar      *self,
     /* If destination is null, don't show a notification. This happens when the
      * operation is a trash operation, which we already show a diferent kind of
      * notification */
-    if (!gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (self->operations_button)) &&
+    if (!gtk_widget_is_visible (self->operations_popover) &&
         folder_to_open != NULL)
     {
         add_operations_button_attention_style (self);