rtla/tests: Fix osnoise test calling timerlat

rtla/tests: Fix osnoise test calling timerlat

[ Upstream commit 34c170ae5c3036ef879567a37409a2859e327342 ]

osnoise test "top stop at failed action" is calling timerlat instead of
osnoise by mistake.

Fix it so that it calls the correct RTLA subcommand.

Fixes: 05b7e10687c6 ("tools/rtla: Add remaining support for osnoise actions")
Reviewed-by: Wander Lairson Costa <wander@redhat.com>
Link: https://lore.kernel.org/r/20251007095341.186923-3-tglozar@redhat.com
Signed-off-by: Tomas Glozar <tglozar@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>