Currently, custom components do not respect `admin.condition` unless
manually wrapped with the `withCondition` HOC, like all default fields
currently do. This should not be a requirement of component authors.
Instead, we can automatically detect custom client and server fields and
wrap them with the underlying `WatchCondition` component which will
subscribe to the `passesCondition` property within client-side form
state.
For my future self: there are potentially multiple instances where
fields subscribe to conditions duplicately, such as when rendering a
default Payload field within a custom field component. This was always a
problem and it is non-breaking, but needs to be reevaluated and removed
in the future for performance. Only the default fields that Payload
renders client-side need to subscribe to field conditions in this way.
When importing a Payload field into your custom field component, for
example, it should not include the HOC, because custom components now
watch conditions themselves.
