The skip_follow_statuses variable, used to check if we need to stay
monitoring the pipeline instead of jumping to the target job traces, is
based on COMPLETED_STATUSES set. But, in Python, we do shallow copies by
default, and changes on skip_follow_statuses reflected on
COMPLETED_STATUSES, which was making manual dependencies stop playing
when --force-manual was not given.
Fixes: 84d401aebf0832741716f947dd7e2e9aac1221ac
Signed-off-by: Guilherme Gallo <guilherme.gallo@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30526>