Set map task metadata only for subnode

[pvditt]

Tracking issue

fixes: https://linear.app/unionai/issue/COR-2212/[bug]-setting-task-metadata-for-the-parent-array-node-causes-incorrect

Why are the changes needed?

Right now metadata such as task timeout is set on the ArrayNode instead of just the subnode. This causes issues as we add support for sub node timeouts as the timeout that is intended for the subnode is also applied to the parent node.

What changes were proposed in this pull request?

Set metadata only for the subnode

How was this patch tested?

• added unit test

Setup process

@task(timeout=timedelta(seconds=30))
def do_thing(t: int) -> str:
    sleep(15)
    return str(t)


@workflow
def wf():
    map_task(do_thing, concurrency=1)(t=[1, 2, 3])

Screenshots

Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

Related PRs

flyteorg/flyte#6054

Docs link