add some @throws in constructors (#1779)

src/Monolog/Handler/ErrorLogHandler.php

@@ -33,6 +33,8 @@ class ErrorLogHandler extends AbstractProcessingHandler
     /**
      * @param int  $messageType    Says where the error should go.
      * @param bool $expandNewlines If set to true, newlines in the message will be expanded to be take multiple log entries
+     *
+     * @throws \InvalidArgumentException If an unsupported message type is set
      */
     public function __construct(int $messageType = self::OPERATING_SYSTEM, int|string|Level $level = Level::Debug, bool $bubble = true, bool $expandNewlines = false)
     {