[PhpUnitBridge][Console][VarDumper] Fix handling NO_COLOR env var

Author: nicolas-grekas

src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php

@@ -410,7 +410,7 @@ private static function hasColorSupport()
         }
 
         // Follow https://no-color.org/
-        if ('' !== ($_SERVER['NO_COLOR'] ?? getenv('NO_COLOR') ?: '')) {
+        if ('' !== (($_SERVER['NO_COLOR'] ?? getenv('NO_COLOR'))[0] ?? '')) {
             return false;
         }
 

src/Symfony/Component/Console/Output/StreamOutput.php

@@ -91,7 +91,7 @@ protected function doWrite(string $message, bool $newline)
     protected function hasColorSupport()
     {
         // Follow https://no-color.org/
-        if ('' !== ($_SERVER['NO_COLOR'] ?? getenv('NO_COLOR') ?: '')) {
+        if ('' !== (($_SERVER['NO_COLOR'] ?? getenv('NO_COLOR'))[0] ?? '')) {
             return false;
         }
 

src/Symfony/Component/VarDumper/Dumper/CliDumper.php

@@ -606,7 +606,7 @@ private function hasColorSupport($stream): bool
         }
 
         // Follow https://no-color.org/
-        if ('' !== ($_SERVER['NO_COLOR'] ?? getenv('NO_COLOR') ?: '')) {
+        if ('' !== (($_SERVER['NO_COLOR'] ?? getenv('NO_COLOR'))[0] ?? '')) {
             return false;
         }