hst: remove enablement json adapter

The go116 behaviour of built-in new function makes this cleaner.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/outcome/process.go

@@ -297,12 +297,12 @@ func (k *outcome) main(msg message.Msg, identifierFd int) {
 					// accumulate enablements of remaining instances
 					var (
 						// alive enablement bits
-						rt hst.Enablement
+						rt hst.Enablements
 						// alive instance count
 						n int
 					)
 					for eh := range entries {
-						var et hst.Enablement
+						var et hst.Enablements
 						if et, err = eh.Load(nil); err != nil {
 							perror(err, "read state header of instance "+eh.ID.String())
 						} else {