Prevent more PHP warnings (#7609)

* Prevent more PHP warnings

* Update call_broadcast_edit.php

* Update call_center_agent_edit.php

* Update call_flow_edit.php

* Update call_center_queue_edit.php

* Update conference_center_edit.php

* Update conference_room_edit.php

* Update conference_control_detail_edit.php

* Update conference_control_edit.php

* Update conference_profile_edit.php

* Update conference_edit.php

* Update conference_profile_param_edit.php

* Update destination_edit.php

* Update device_edit.php

* Update dialplan_inbound_add.php

* Update dialplan_outbound_add.php

* Update dialplan_add.php

* Update dialplan_edit.php

* Update event_guard_logs.php

* Update extension_setting_edit.php

* Update extension_edit.php

* Update fax_edit.php

* Update fifo_edit.php

* Update ivr_menu_edit.php

* Update phrase_edit.php

* Update ring_group_edit.php

* Update sip_profile_edit.php

* Update stream_edit.php

* Update time_condition_edit.php

* Update var_edit.php

* Update voicemail_edit.php

* Update xml_cdr_search.php

* Update dashboard_widget_edit.php

* Update domain_edit.php

* Update group_edit.php

* Update user_edit.php

* Update gateway_edit.php

app/fifo/fifo_edit.php

@@ -18,7 +18,7 @@
 
 	The Initial Developer of the Original Code is
 	Mark J Crane <markjcrane@fusionpbx.com>
-	Portions created by the Initial Developer are Copyright (C) 2024
+	Portions created by the Initial Developer are Copyright (C) 2024-2025
 	the Initial Developer. All Rights Reserved.
 */
 
@@ -36,6 +36,11 @@
 	$language = new text;
 	$text = $language->get();
 
+//set the defaults
+	$fifo_strategy = '';
+	$fifo_exit_key = '';
+	$fifo_exit_action = '';
+
 //add the settings object
 	$settings = new settings(["domain_uuid" => $_SESSION['domain_uuid'], "user_uuid" => $_SESSION['user_uuid']]);
 
@@ -419,6 +424,9 @@
 		unset($sql, $parameters, $row);
 	}
 
+//set the defaults
+	$fifo_enabled = $fifo_enabled ?? true;
+
 //get the child data
 	if (!empty($fifo_uuid) && is_uuid($fifo_uuid)) {
 		$sql = "select ";