array_replace_recursive() return type

[shira-374]

Both array_replace() and array_replace_recursive() are documented to return NULL "if an error occurs", but Psalm treats them differently:

https://psalm.dev/r/35615780e3

I'd expect no errors since this should be covered by ignoreInternalFunctionNullReturn.

[psalm-github-bot]

I found these snippets:

https://psalm.dev/r/35615780e3

<?php
  
function example(): array
{
	return array_replace_recursive([], []);
}

function example2(): array
{
	return array_replace([], []);
}

Psalm output (using commit 7ea06c7):

ERROR: NullableReturnStatement - 5:9 - The declared return type 'array<array-key, mixed>' for example is not nullable, but the function returns 'array<array-key, mixed>|null'

ERROR: InvalidNullableReturnType - 3:21 - The declared return type 'array<array-key, mixed>' for example is not nullable, but 'array<array-key, mixed>|null' contains null