bug #32500 [Debug][DebugClassLoader] Include found files instead of r…

…equiring them (fancyweb)

This PR was merged into the 3.4 branch.

Discussion
----------

[Debug][DebugClassLoader] Include found files instead of requiring them

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #32499
| License       | MIT
| Doc PR        | no

It fixes #32499 + it makes the `DebugClassLoader` behaves like composer `ClassLoader` that is very likely the wrapped class loader.

Commits
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c7141c8 [Debug][DebugClassLoader] Include found files instead of requiring them

src/Symfony/Component/Debug/DebugClassLoader.php

@@ -149,11 +149,11 @@ public function loadClass($class)
                 if (!$file = $this->classLoader[0]->findFile($class) ?: false) {
                     // no-op
                 } elseif (\function_exists('opcache_is_script_cached') && @opcache_is_script_cached($file)) {
-                    require $file;
+                    include $file;
 
                     return;
                 } else {
-                    require $file;
+                    include $file;
                 }
             } else {
                 \call_user_func($this->classLoader, $class);