lock: fix passing screenName to surface

Modules/Lock/Lock.qml

@@ -82,12 +82,16 @@ Scope {
         locked: shouldLock
 
         WlSessionLockSurface {
+            id: lockSurface
+
             color: "transparent"
 
             LockSurface {
                 anchors.fill: parent
                 lock: sessionLock
                 sharedPasswordBuffer: root.sharedPasswordBuffer
+                screenName: lockSurface.screen?.name ?? ""
+                isLocked: shouldLock
                 onUnlockRequested: {
                     root.unlock()
                 }

Modules/Lock/LockSurface.qml

@@ -10,6 +10,8 @@ Rectangle {
 
     required property WlSessionLock lock
     required property string sharedPasswordBuffer
+    required property string screenName
+    required property bool isLocked
 
     signal passwordChanged(string newPassword)
     signal unlockRequested()
@@ -17,10 +19,12 @@ Rectangle {
     color: "transparent"
 
     LockScreenContent {
+        id: lockContent
+
         anchors.fill: parent
         demoMode: false
         passwordBuffer: root.sharedPasswordBuffer
-        screenName: ""
+        screenName: root.screenName
         onUnlockRequested: root.unlockRequested()
         onPasswordBufferChanged: {
             if (root.sharedPasswordBuffer !== passwordBuffer) {
@@ -28,4 +32,10 @@ Rectangle {
             }
         }
     }
+
+    onIsLockedChanged: {
+        if (!isLocked) {
+            lockContent.unlocking = false
+        }
+    }
 }