Mixed Coercion on lists

[orklah]

https://psalm.dev/r/ef00fa13a3
Should raise the same issues as
https://psalm.dev/r/98e1649070

in order to be raised at level 1 instead of level 3

ping @danog

[psalm-github-bot]

I found these snippets:

https://psalm.dev/r/ef00fa13a3

<?php

/**
 * @return list<string>
 */
function foo(){
    /**
     * @var list<mixed>
     */
  return [];   
}

Psalm output (using commit 3560ef7):

INFO: LessSpecificReturnStatement - 10:10 - The type 'list<mixed>' is more general than the declared return type 'list<string>' for foo

INFO: MoreSpecificReturnType - 4:12 - The declared return type 'list<string>' for foo is more specific than the inferred return type 'list<mixed>'

https://psalm.dev/r/98e1649070

<?php

/**
 * @return array<string>
 */
function foo(){
    /**
     * @var array<mixed>
     */
  return [];   
}

Psalm output (using commit 3560ef7):

INFO: MixedReturnTypeCoercion - 10:10 - The type 'array<array-key, mixed>' is more general than the declared return type 'array<array-key, string>' for foo

INFO: MixedReturnTypeCoercion - 4:12 - The declared return type 'array<array-key, string>' for foo is more specific than the inferred return type 'array<array-key, mixed>'