fix: Save and apply profile icon if it hasn't been applied yet

Icon saving was not working in situations where profile.Name had not changed.

service/profile/profile.go

@@ -538,13 +538,14 @@ func (profile *Profile) updateMetadataFromSystem(ctx context.Context, md Matchin
 		}
 
 		// Apply new icon if found.
-		if newIcon != nil {
+		if newIcon != nil && !profile.iconExists(newIcon) {
 			if len(profile.Icons) == 0 {
 				profile.Icons = []binmeta.Icon{*newIcon}
 			} else {
 				profile.Icons = append(profile.Icons, *newIcon)
 				profile.Icons = binmeta.SortAndCompactIcons(profile.Icons)
 			}
+			changed = true
 		}
 	}()
 
@@ -559,3 +560,13 @@ func (profile *Profile) updateMetadataFromSystem(ctx context.Context, md Matchin
 
 	return nil
 }
+
+// Checks if the given icon already assigned to the profile.
+func (profile *Profile) iconExists(newIcon *binmeta.Icon) bool {
+	for _, icon := range profile.Icons {
+		if icon.Value == newIcon.Value && icon.Type == newIcon.Type && icon.Source == newIcon.Source {
+			return true
+		}
+	}
+	return false
+}