Psalm does not warn about uninitialized property when using mixed

[kamil-tekiela]

Example: https://psalm.dev/r/69f34fdc0f

I expected to see MissingConstructor error.

[psalm-github-bot]

I found these snippets:

https://psalm.dev/r/69f34fdc0f

<?php

class Base
{
	private mixed $data;

    public function doSomething():void
    {
        if ($this->data) {
            StoreData::store($this->data);
        }
    }

}

Psalm output (using commit 3c90054):

ERROR: UndefinedClass - 10:13 - Class, interface or enum named StoreData does not exist