Update `MeterRegistryPostProcessor` to configure `MeterRegistry` beans
in two distinct sweeps. The first sweep applies customizers and filters
as the `MeterRegistry` bean is initialized, the second sweep applies
`MeterBinder` beans once all singletons have been instantiated.
Prior to this commit, it was not possible for a `MeterBinder` bean to
directly or indirectly use a `MeterRegistry`. It was also possible for
bound meters to cause a deadlock during refresh processing if those
meters could be updated on a thread other than main, such as GC
notifications.
Fixes gh-30636
Fixes gh-33070
e5a0b164ac