parser: Avoid dropping modifiers when splitting list (#8546)

Fix for a linked list usage bug; avoids dropping any modifiers when
moving type modifiers from a linked list of modifiers into their own
linked list. Since this change results in no_diff modifiers to
traditional functions ending up on the return type instead of the
function (due to the order they're parsed in), we duplicate the no_diff
modifier onto the function declaration after the fact.

Includes a test for the original issue. The no_diff redistribution case
is covered by a slangpy device test case.

Fixes #8332

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Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>

0 files changed, 0 insertions, 0 deletions