Fix brave/brave-ios#8227: When launching the QR code scanning UI whil…

…e in the Landscape mode, the camera view is rotated 90 degrees (brave/brave-ios#8472)

Sources/Brave/Frontend/Browser/Search/Recent Search/RecentSearchQRCodeScannerController.swift

@@ -66,6 +66,13 @@ class RecentSearchQRCodeScannerController: UIViewController {
   override func viewWillAppear(_ animated: Bool) {
     super.viewWillAppear(animated)
 
+    scannerView.cameraView.stopRunning()
+  }
+
+  override func viewDidAppear(_ animated: Bool) {
+    if let orientation = view.window?.windowScene?.interfaceOrientation {
+        scannerView.cameraView.videoPreviewLayer?.connection?.videoOrientation = AVCaptureVideoOrientation(ui: orientation)
+    }
     scannerView.cameraView.startRunning()
   }
 

Sources/Brave/Frontend/Sync/SyncCameraView.swift

@@ -124,7 +124,7 @@ class SyncCameraView: UIView, AVCaptureMetadataOutputObjectsDelegate {
     videoPreviewLayer?.frame = layer.bounds
     layer.addSublayer(videoPreviewLayer!)
 
-    captureSession.startRunning()
+    startRunning()
     bringSubviewToFront(cameraOverlayView)
 
     AVCaptureDevice.requestAccess(
@@ -143,11 +143,19 @@ class SyncCameraView: UIView, AVCaptureMetadataOutputObjectsDelegate {
   }
 
   func startRunning() {
-    captureSession?.startRunning()
+    DispatchQueue.global(qos: .default).async { [weak self] in
+      guard let self else { return }
+
+      if self.captureSession?.isRunning == false {
+        self.captureSession?.startRunning()
+      }
+    }
   }
 
   func stopRunning() {
-    captureSession?.stopRunning()
+    if captureSession?.isRunning == true {
+      captureSession?.stopRunning()
+    }
   }
 
   func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) {