readonly keyword not accepted when it comes first in class property definition

[hackel]

Just came across this while testing against PHP-CS-Fixer's tests. Not super important, but still a bug.

<?php

class Test {
    readonly public int $test;
}

Prettier Output (php-parser 3.2.5):

[error] test.php: SyntaxError: Parse Error : syntax error, unexpected 'public' (T_PUBLIC), expecting T_VARIABLE on line 4
[error]   2 |
[error]   3 | class Test {
[error] > 4 |     readonly public int $test;
[error]     |             ^
[error]   5 | }

I thought this should have been solved by #997, but it looks like that only applied to promoted properties in the constructor.