fix lock screen multi-monitor input

Modules/Lock/Lock.qml

@@ -20,6 +20,7 @@ Item {
             id: lock
 
             property bool unlocked: false
+            property string sharedPasswordBuffer: ""
 
             locked: true
 
@@ -30,6 +31,10 @@ Item {
 
             LockSurface {
                 lock: lock
+                sharedPasswordBuffer: lock.sharedPasswordBuffer
+                onPasswordChanged: (newPassword) => {
+                    lock.sharedPasswordBuffer = newPassword
+                }
             }
         }
     }

Modules/Lock/LockSurface.qml

@@ -10,6 +10,9 @@ WlSessionLockSurface {
     id: root
 
     required property WlSessionLock lock
+    required property string sharedPasswordBuffer
+
+    signal passwordChanged(string newPassword)
 
     property bool thisLocked: false
     readonly property bool locked: thisLocked && !lock.unlocked
@@ -41,7 +44,13 @@ WlSessionLockSurface {
         sourceComponent: LockScreenContent {
             demoMode: false
             powerModal: powerModal
+            passwordBuffer: root.sharedPasswordBuffer
             onUnlockRequested: root.unlock()
+            onPasswordBufferChanged: {
+                if (root.sharedPasswordBuffer !== passwordBuffer) {
+                    root.passwordChanged(passwordBuffer)
+                }
+            }
         }
     }
 }