[10.x] Fix support for the LARAVEL_STORAGE_PATH env var (#51238) (#51243)

* [10.x] Fix support for the LARAVEL_STORAGE_PATH env var

* formatting

---------

Co-authored-by: Taylor Otwell <[email protected]>

Author: dunglas

src/Illuminate/Foundation/Application.php

@@ -535,6 +535,10 @@ public function storagePath($path = '')
             return $this->joinPaths($this->storagePath ?: $_ENV['LARAVEL_STORAGE_PATH'], $path);
         }
 
+        if (isset($_SERVER['LARAVEL_STORAGE_PATH'])) {
+            return $this->joinPaths($this->storagePath ?: $_SERVER['LARAVEL_STORAGE_PATH'], $path);
+        }
+
         return $this->joinPaths($this->storagePath ?: $this->basePath('storage'), $path);
     }