internal/rosa: respect preferred loadavg target

This generally improves build performance and system responsiveness.

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

internal/rosa/state.go

@@ -499,6 +499,9 @@ func (s *S) getFrame() azalea.Frame {
 			k("jobsLE"):     jobsLE,
 			k("jobsLFlagE"): jobsLFlagE,
 
+			k("loadE"):     loadE,
+			k("loadFlagE"): loadFlagE,
+
 			k("anityaFallback"): (*Versions).getStable,
 			k("anityaLegacyCPAN"): func(v *Versions) string {
 				for _, e := range v.Stable {