To fix the user tag control.
I would have done it locally to the user tag control, but it was pissing
me off because I wanted the add button to be aquamarine (as it's closer
to the accents the screen is already using), but the popover on open was
for whatever reason purple and I just want consistency where possible.
Band-aid fix for https://github.com/ppy/osu/issues/32671.
Removes all `BindableList.BindTo` from `load()` methods (except one
editor one which looks safe and is kinda hard to fix without moving
drawable load to a blocking operation).
The lack of this is currently failing a unit test on
`osu-server-spectator` current master:
https://github.com/ppy/osu-server-spectator/actions/runs/14193158383/job/39762243965#step:4:28
I don't think the failure actually matters because I don't think we're
using json serialisation on spectator server side anywhere (used to for
iOS at least, but I don't think we do anymore?), but probably better to
be safe than sorry.