Issue #3368741: Drush build test symlinks drush and only passes because it loads classes not in build test project

package_manager/tests/src/Build/TemplateProjectTestBase.php

@@ -438,12 +438,13 @@ END;
           'autoload' => $package_info['autoload'] ?? [],
         ];
         if (isset($package_info['require'])) {
-          foreach (array_keys($package_info['require']) as $package_name) {
-            // Do not require polyfill packages for PHP 7 or 8.
-            if (str_starts_with($package_name, 'symfony/polyfill-php7') || str_starts_with($package_name, 'symfony/polyfill-php8')) {
-              unset($package_info['require'][$package_name]);
-            }
-          }
+          unset(
+            $package_info['require']['symfony/polyfill-php72'],
+            $package_info['require']['symfony/polyfill-php73'],
+            $package_info['require']['symfony/polyfill-php74'],
+            $package_info['require']['symfony/polyfill-php80'],
+            $package_info['require']['symfony/polyfill-php81'],
+          );
           $packages[$name][$version]['require'] = $package_info['require'];
         }
         // Composer plugins are loaded and activated as early as possible, and
@@ -451,7 +452,6 @@ END;
         // with a dependency on `composer-plugin-api` (plus any other real
         // runtime dependencies).
         if ($packages[$name][$version]['type'] === 'composer-plugin') {
-          $packages[$name][$version]['require'] = $package_info['require'] ?? [];
           $packages[$name][$version]['extra'] = $package_info['extra'] ?? [];
         }
       }