Merge branch '5.4' into 6.3

* 5.4:
  [String] Skip a test when an issue is detected in PCRE2
  [Mailer] Stop using the (local) AWS shared configuration in the PHPUnit tests.
  detect colors on not windows
  fix xterm detection
  refactor: hyper check
  Missing translations for Slovak (sk) #51954
  properly handle SYMFONY_DOTENV_VARS being the empty string
  Avoid incompatibility with symfony/console 7
  bug #45057 [Messenger] Avoid reconnecting active Redis connections.
  [Serializer] fix regression where nullable int cannot be serialized
  do not overwrite an application's default serialization context

Output/StreamOutput.php

@@ -96,18 +96,17 @@ protected function hasColorSupport(): bool
             return false;
         }
 
-        if ('Hyper' === getenv('TERM_PROGRAM')) {
+        if (\DIRECTORY_SEPARATOR === '\\'
+            && \function_exists('sapi_windows_vt100_support')
+            && @sapi_windows_vt100_support($this->stream)
+        ) {
             return true;
         }
 
-        if (\DIRECTORY_SEPARATOR === '\\') {
-            return (\function_exists('sapi_windows_vt100_support')
-                && @sapi_windows_vt100_support($this->stream))
-                || false !== getenv('ANSICON')
-                || 'ON' === getenv('ConEmuANSI')
-                || 'xterm' === getenv('TERM');
-        }
-
-        return stream_isatty($this->stream);
+        return 'Hyper' === getenv('TERM_PROGRAM')
+            || false !== getenv('ANSICON')
+            || 'ON' === getenv('ConEmuANSI')
+            || str_starts_with((string) getenv('TERM'), 'xterm')
+            || stream_isatty($this->stream);
     }
 }