Handle GNOME 40 now starting at overview, not desktop

For consistency, let's just return to the desktop right away. We
also need to handle closing the overview before running installer
on live image boot.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

lib/utils.pm

@@ -856,6 +856,9 @@ sub check_desktop {
         @_
     );
     assert_screen "apps_menu_button", $args{timeout};
+    # GNOME 40 starts on the overview by default; for consistency with
+    # older GNOME and KDE, let's just close it
+    send_key "alt-f1" if match_has_tag "apps_menu_button_active";
 }
 
 sub download_modularity_tests {

needles/gnome/apps_menu_button_active-20210304.json

@@ -0,0 +1,19 @@
+{
+  "area": [
+    {
+      "height": 15,
+      "ypos": 9,
+      "xpos": 15,
+      "width": 67,
+      "type": "match"
+    }
+  ],
+  "properties": [],
+  "tags": [
+    "DESKTOP-gnome",
+    "ENV-DISTRI-fedora",
+    "LANGUAGE-english",
+    "apps_menu_button",
+    "apps_menu_button_active"
+  ]
+}

needles/gnome/login_gdm_input-20210304.json

@@ -0,0 +1,17 @@
+{
+  "area": [
+    {
+      "type": "match",
+      "width": 56,
+      "ypos": 422,
+      "height": 41,
+      "xpos": 402
+    }
+  ],
+  "properties": [],
+  "tags": [
+    "graphical_login_input",
+    "DESKTOP-gnome",
+    "LANGUAGE-english"
+  ]
+}

tests/_boot_to_anaconda.pm

@@ -113,7 +113,9 @@ sub run {
         else {
             # on lives, we have to explicitly launch anaconda
             if (get_var('LIVE')) {
-                assert_and_click("live_start_anaconda_icon", timeout=>300);
+                assert_screen ["live_start_anaconda_icon", "apps_menu_button_active"], 300;
+                send_key "alt-f1" if match_has_tag "apps_menu_button_active";
+                assert_and_click("live_start_anaconda_icon");
                 unless (check_screen "anaconda_select_install_lang", 180) {
                     # click it again - on KDE since 2019-10 or so it seems
                     # like the first attempt sometimes just doesn't work