Some lockscreen restructure

Services/SessionService.qml

@@ -366,6 +366,8 @@ Singleton {
     }
 
     function updateLoginctlState(state) {
+        const wasLocked = locked
+
         sessionId = state.sessionId || ""
         sessionPath = state.sessionPath || ""
         locked = state.locked || false
@@ -384,6 +386,12 @@ Singleton {
             prepareForSleep()
         }
 
+        if (locked && !wasLocked) {
+            sessionLocked()
+        } else if (!locked && wasLocked) {
+            sessionUnlocked()
+        }
+
         loginctlStateChanged()
     }
 
@@ -483,10 +491,4 @@ Singleton {
         }
     }
 
-    Process {
-        id: lockSessionFallback
-        command: ["loginctl", "lock-session"]
-        running: false
-    }
-
 }