Preserve aliases in nested "through" joins when referencing the same table multiple times

While upgrading an older Laravel package and in turn eloquent-power-joins, a few of our queries broke because nested "through" relationships no longer respected table aliases when the same table was joined multiple times.

Example:

Comment::joinRelationship('user.commentsThroughPosts', [
    'user' => fn ($join) => $join->as('users_alias')->withTrashed(),
    'commentsThroughPosts' => [
        'posts' => fn ($join) => $join->as('posts_alias')->withTrashed(),
    ],
])->toSql();

Current output (using incorrect alias on the users table):
... inner join "posts" as "posts_alias" on "posts_alias"."user_id" = "users"."id"

Expected output (after checking the static cache for the alias on the far parent):
... inner join "posts" as "posts_alias" on "posts_alias"."user_id" = "users_alias"."id"