[Console] Harden array type for test-related user inputs

Inputs must be strings, otherwise they cannot be properly written to the
`php://memory` stream. Using the hardened typed annotation, static code
analyzers may assist developers in using correct array values.

Author: eliashaeussler

src/Symfony/Component/Console/Tester/TesterTrait.php

@@ -24,6 +24,10 @@
 trait TesterTrait
 {
     private StreamOutput $output;
+
+    /**
+     * @var list<string>
+     */
     private array $inputs = [];
     private bool $captureStreamsIndependently = false;
     private InputInterface $input;
@@ -107,8 +111,8 @@ public function assertCommandIsSuccessful(string $message = ''): void
     /**
      * Sets the user inputs.
      *
-     * @param array $inputs An array of strings representing each input
-     *                      passed to the command input stream
+     * @param list<string> $inputs An array of strings representing each input
+     *                             passed to the command input stream
      *
      * @return $this
      */
@@ -161,6 +165,8 @@ private function initOutput(array $options): void
     }
 
     /**
+     * @param list<string> $inputs
+     *
      * @return resource
      */
     private static function createStream(array $inputs)