changelogger: Fix Phan issues (#36755)

* changelogger: Fix Phan issues

* Lots of phpdoc fixes.
* Use `??` where applicable.
* Deprecate the `$subheading` parameter to
  `ChangelogEntry::getChangesBySubheading()`, since it makes the return
  value confusing.
* Assign some Symfony HelperInterfaces to variables so we can tell Phan
  the correct type.
* Move most of `WordpressVersioning::normalizeVersion()` to a private
  `WordpressVersioning::normalizeVersionInternal()` so the `$version`
  parameter type can be properly documented.
  * Remove some parameter validation that is no longer needed with it
	being private.
* Fix some `RuntimeException` → `LoadChangeFileException` renames left
  over from #27949.
* Suppress some false positives.
  * Lots due to PHPUnit, sigh.
* Add some missing `@codeCoverageIgnore` to bring the coverage back up.

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/8619009165

composer.json

@@ -8,7 +8,7 @@
 	},
 	"require-dev": {
 		"yoast/phpunit-polyfills": "1.1.0",
-		"automattic/jetpack-changelogger": "^4.1.3-alpha"
+		"automattic/jetpack-changelogger": "^4.2.0-alpha"
 	},
 	"autoload": {
 		"classmap": [

vendor/automattic/jetpack-device-detection/composer.json

@@ -8,7 +8,7 @@
 	},
 	"require-dev": {
 		"yoast/phpunit-polyfills": "1.1.0",
-		"automattic/jetpack-changelogger": "^4.1.3-alpha"
+		"automattic/jetpack-changelogger": "^4.2.0-alpha"
 	},
 	"suggest": {
 		"automattic/jetpack-autoloader": "Allow for better interoperability with other plugins that use this package."

vendor/composer/installed.json

@@ -7,13 +7,13 @@
             "dist": {
                 "type": "path",
                 "url": "/tmp/jetpack-build/Automattic/jetpack-device-detection",
-                "reference": "b9e42ec4bcd6972c820c430354226f624579a420"
+                "reference": "86cada8463bce2573ac3824cac92788cf9024d6e"
             },
             "require": {
                 "php": ">=7.0"
             },
             "require-dev": {
-                "automattic/jetpack-changelogger": "^4.1.3-alpha",
+                "automattic/jetpack-changelogger": "^4.2.0-alpha",
                 "yoast/phpunit-polyfills": "1.1.0"
             },
             "suggest": {

vendor/composer/installed.php

@@ -13,7 +13,7 @@
         'automattic/jetpack-device-detection' => array(
             'pretty_version' => '2.1.3',
             'version' => '2.1.3.0',
-            'reference' => 'b9e42ec4bcd6972c820c430354226f624579a420',
+            'reference' => '86cada8463bce2573ac3824cac92788cf9024d6e',
             'type' => 'jetpack-library',
             'install_path' => __DIR__ . '/../automattic/jetpack-device-detection',
             'aliases' => array(),