[ErrorHandler] Improve fileLinkFormat handling

- Avoid repeating file link format guessing (logic is already in FileLinkFormatter class)
- Always set a fileLinkFormat to a FileLinkFormatter object to handle path mappings properly

Author: nlemoine

Dumper/ContextProvider/SourceContextProvider.php

@@ -11,7 +11,8 @@
 
 namespace Symfony\Component\VarDumper\Dumper\ContextProvider;
 
-use Symfony\Component\HttpKernel\Debug\FileLinkFormatter;
+use Symfony\Component\ErrorHandler\ErrorRenderer\FileLinkFormatter;
+use Symfony\Component\HttpKernel\Debug\FileLinkFormatter as LegacyFileLinkFormatter;
 use Symfony\Component\VarDumper\Cloner\VarCloner;
 use Symfony\Component\VarDumper\Dumper\HtmlDumper;
 use Symfony\Component\VarDumper\VarDumper;
@@ -30,7 +31,7 @@ final class SourceContextProvider implements ContextProviderInterface
     private ?string $projectDir;
     private ?FileLinkFormatter $fileLinkFormatter;
 
-    public function __construct(string $charset = null, string $projectDir = null, FileLinkFormatter $fileLinkFormatter = null, int $limit = 9)
+    public function __construct(string $charset = null, string $projectDir = null, FileLinkFormatter|LegacyFileLinkFormatter $fileLinkFormatter = null, int $limit = 9)
     {
         $this->charset = $charset;
         $this->projectDir = $projectDir;

VarDumper.php

@@ -11,9 +11,9 @@
 
 namespace Symfony\Component\VarDumper;
 
+use Symfony\Component\ErrorHandler\ErrorRenderer\FileLinkFormatter;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\RequestStack;
-use Symfony\Component\HttpKernel\Debug\FileLinkFormatter;
 use Symfony\Component\VarDumper\Caster\ReflectionCaster;
 use Symfony\Component\VarDumper\Cloner\VarCloner;
 use Symfony\Component\VarDumper\Dumper\CliDumper;