Launchpad: migrate business logic to Task definitions (#30472)

* Active task listener callbacks for updating task completion
* Use the task registry for REST API registration details
* Port remaining Launchpad functionality from mu-plugin
* unhook old plugin properly
* allow a visibility callback, for verify_email
* Fix tests
* VideoPress compat

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/4897467744

Author: mattwiebe

composer.json

@@ -4,7 +4,7 @@
 	"type": "wordpress-plugin",
 	"license": "GPL-2.0-or-later",
 	"require": {
-		"automattic/jetpack-mu-wpcom": "^1.7.1-alpha"
+		"automattic/jetpack-mu-wpcom": "^1.8.0-alpha"
 	},
 	"require-dev": {
 		"yoast/phpunit-polyfills": "1.0.4",

composer.lock

@@ -5,10 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [1.7.1-alpha] - unreleased
+## [1.8.0-alpha] - unreleased
 
 This is an alpha version! The changes listed here are not final.
 
+### Changed
+- Migrates Launchpad business logic from the mu-plugin to being defined by tasks
+
 ### Fixed
 - Avoid hooking Map settings multiple times.
 - Ensure Map block settings get hooked to existing block bbubundle.
@@ -130,7 +133,7 @@ This is an alpha version! The changes listed here are not final.
 
 - Testing initial package release.
 
-[1.7.1-alpha]: https://github.com/Automattic/jetpack-mu-wpcom/compare/v1.7.0...v1.7.1-alpha
+[1.8.0-alpha]: https://github.com/Automattic/jetpack-mu-wpcom/compare/v1.7.0...v1.8.0-alpha
 [1.7.0]: https://github.com/Automattic/jetpack-mu-wpcom/compare/v1.6.0...v1.7.0
 [1.6.0]: https://github.com/Automattic/jetpack-mu-wpcom/compare/v1.5.1...v1.6.0
 [1.5.1]: https://github.com/Automattic/jetpack-mu-wpcom/compare/v1.5.0...v1.5.1

vendor/automattic/jetpack-mu-wpcom/CHANGELOG.md

@@ -33,7 +33,7 @@ public static function init() {
 		// Coming Soon feature.
 		add_action( 'plugins_loaded', array( __CLASS__, 'load_coming_soon' ) );
 		add_action( 'plugins_loaded', array( __CLASS__, 'load_wpcom_rest_api_endpoints' ) );
-		add_action( 'plugins_loaded', array( __CLASS__, 'load_launchpad' ) );
+		add_action( 'plugins_loaded', array( __CLASS__, 'load_launchpad' ), 0 );
 
 		// Unified navigation fix for changes in WordPress 6.2.
 		add_action( 'admin_enqueue_scripts', array( __CLASS__, 'unbind_focusout_on_wp_admin_bar_menu_toggle' ) );