[CC] Fix dev validation error from server action bound args (#88600)
In Cache Components, bound args encryption needs to be cached (and
tracked with cacheSignal) because it's tasky. We use the serialized
bound args themselves as a cache key. However, in dev, the key ends up
containing debug info (in particular, timing information) so it's
different every time . This causes a cache miss and results in a static
shell validation failure.
The fix is to use a dummy debug channel to pipe the problematic debug
info into the void and thus make the key be deterministic.