In addition to this computation being wasteful, it introduces a bug
where the allocation on a stats tracker can update twice in one render,
which isn't allowed in Glimmer (ironically, Glimmmer's lack of
auto-memoization introduced the issue).
Currently, PrimaryMetric is already overloaded on multiple dimensions:
metric and resource type.
This refactor will use multiple components as a form of control flow
instead spidering conditionals, which are only getting worse as the
charts for each resource type diverge.
