Merge branch '6.4' into 7.3

* 6.4:
  Restore Relay 8.5 test
  account for PHP_ZTS being a boolean value on PHP 8.4+
  [Intl] Update data to ICU 78.1
  [Console] Fix exception message when abbreviation matches multiple hidden commands
  [FrameworkBundle] Fix TypeError when traversing scalar values in debug:config
  [DependencyInjection] Fix loop corruption in CheckTypeDeclarationsPass
  [DependencyInjection] Fix invalid PHP syntax for nullable TypedReference in PhpDumper
  Fix typo in comment
  [Translation][Routing] Fix typos
  [String] Fix normalization in trimPrefix/trimSuffix

Author: xabbuh

Application.php

@@ -791,9 +791,9 @@ public function find(string $name): Command
             }
         }
 
-        $command = $this->get(reset($commands));
+        $command = $commands ? $this->get(reset($commands)) : null;
 
-        if ($command->isHidden()) {
+        if (!$command || $command->isHidden()) {
             throw new CommandNotFoundException(\sprintf('The command "%s" does not exist.', $name));
         }
 

Tests/ApplicationTest.php

@@ -2601,6 +2601,21 @@ public function testOriginalHandlerRestoredAfterPop()
         $this->assertSame(\SIG_DFL, pcntl_signal_get_handler(\SIGUSR1), 'OS-level handler must remain SIG_DFL after a second run.');
     }
 
+    public function testFindAmbiguousHiddenCommands()
+    {
+        $application = new Application();
+
+        $application->add(new Command('test:foo'));
+        $application->add(new Command('test:foobar'));
+        $application->get('test:foo')->setHidden(true);
+        $application->get('test:foobar')->setHidden(true);
+
+        $this->expectException(CommandNotFoundException::class);
+        $this->expectExceptionMessage('The command "t:f" does not exist.');
+
+        $application->find('t:f');
+    }
+
     /**
      * @requires extension pcntl
      *