[2.x] Handle all eval() failures from Laravel Tinker

[derekmd]

With Laravel Telescope and Laravel Tinker enabled in a project, php artisan tinker and attempt an expression that fatally fails PHP parsing.

Instead of:

$foo[] = 'bar'

Try typing:

foo[] = 'bar'

The desired output would be the below exception about the foo symbol missing $.

In ExecutionLoopClosure.php(55) : eval()'d code line 1:

Cannot use temporary expression in write context

Instead the developer is shown an unrelated Laravel Telescope-related stacktrace:

PHP Warning: file_get_contents(/home/dev/project/vendor/psy/psysh/src/ExecutionLoopClosure.php(55) : eval()'d code): failed to open stream: No such file or directory in
/home/dev/project/vendor/laravel/telescope/src/ExceptionContext.php on line 45

because the watched $exception->getFile() is a human readable string instead of an actual PHP script file path.

This change will show better output by looking for the eval() message string: https://github.com/php/php-src/blob/ac0853eb265784c4238af652de9c54c883ffa99f/Zend/zend_execute.c#L4157

Trying the above example in an automated test won't work since the PHPUnit script exits immediately from the eval() failure. So I've added a case that best mimics how Laravel Tinker / PsySH treat eval() raising ParseError. https://github.com/bobthecow/psysh/blob/29670a13ff363aa83df889d297fc23527a75cfe4/src/ExecutionLoopClosure.php#L95