no-return type breaks whole union in @return

[someniatko]

This is a minimal reproducer of the problem:
https://psalm.dev/r/3b5004a09a

no-return is a "bottom type", this means it should be a subtype of all types. But for now it "contaminates" the return type of
any function and Psalm just thinks it must not return nothing at all, even if there are other non-bottom types in the union.

You can see where I have to use this type in practice in the following repo, which is a simple library for FP-ish Result type (Success or Error), and where I encountered this error:
https://github.com/someniatko/php-result-type

[psalm-github-bot]

I found these snippets:

https://psalm.dev/r/3b5004a09a

<?php

/** @return int|no-return */
function returnSomething(): int
{
    return 1;
}

Psalm output (using commit 39e61ae):

ERROR: InvalidReturnType - 3:13 - returnSomething is not expected to return any values but it does, either implicitly or explicitly