This checks if a tracer has registered to any hook after
initialization and automatically registers it to the "none" hook if not
so the lifetime of those tracer is the same as tracer who registers to hooks.
For example the `dots` tracer was being freed right after initialization
which was unexpected.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/9547>
e87b3b0359