minor #35555 [DX][TwigBridge] Show both missing packages for Notifica…

…tionMail in the same error message (wouterj)

This PR was merged into the 4.4 branch.

Discussion
----------

[DX][TwigBridge] Show both missing packages for NotificationMail in the same error message

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Tickets       | n/a
| License       | MIT
| Doc PR        | n/a

I ran `composer req twig` expecting to be ready to use the notification mail feature. After that, it required 2 page refreshes in the browser and 2 composer commands to be ready. This PR merges both missing packages into one error message, to improve developer experience.

Commits
-------

f462285 Show both missing packages in the same error message

src/Symfony/Bridge/Twig/Mime/NotificationEmail.php

@@ -41,12 +41,17 @@ class NotificationEmail extends TemplatedEmail
 
     public function __construct(Headers $headers = null, AbstractPart $body = null)
     {
+        $missingPackages = [];
         if (!class_exists(CssInlinerExtension::class)) {
-            throw new \LogicException(sprintf('You cannot use "%s" if the CSS Inliner Twig extension is not available; try running "composer require twig/cssinliner-extra".', static::class));
+            $missingPackages['twig/cssinliner-extra'] = ' CSS Inliner';
         }
 
         if (!class_exists(InkyExtension::class)) {
-            throw new \LogicException(sprintf('You cannot use "%s" if the Inky Twig extension is not available; try running "composer require twig/inky-extra".', static::class));
+            $missingPackages['twig/inky-extra'] = 'Inky';
+        }
+
+        if ([] !== $missingPackages) {
+            throw new \LogicException(sprintf('You cannot use "%s" if the %s Twig extension%s not available; try running "composer require %s".', static::class, implode(' and ', $missingPackages), \count($missingPackages) > 1 ? 's are' : ' is', implode(' ', array_keys($missingPackages))));
         }
 
         parent::__construct($headers, $body);