Bugfix FXIOS-9933 #21791 Password screen no longer blurs (blank inste…

…ad) when app is backgrounded (#21884)

* FXIOS-9933 #21791 Password screen no longer blurs (blank instead) when app is backgrounded

* Remove privacy screen granularly

* Remove check

firefox-ios/Client/Frontend/Browser/BrowserViewController/Views/BrowserViewController.swift

@@ -492,7 +492,8 @@ class BrowserViewController: UIViewController,
         // If we are displaying a private tab, hide any elements in the tab that we wouldn't want shown
         // when the app is in the home switcher
         guard let privateTab = tabManager.selectedTab,
-              privateTab.isPrivate
+              privateTab.isPrivate,
+              canShowPrivacyView
         else { return }
 
         view.bringSubviewToFront(webViewContainerBackdrop)
@@ -508,6 +509,12 @@ class BrowserViewController: UIViewController,
         presentedViewController?.view.alpha = 0
     }
 
+    var canShowPrivacyView: Bool {
+        // Show privacy view if no view controller is presented
+        // or if the presented view is a PhotonActionSheet.
+        self.presentedViewController == nil || presentedViewController is PhotonActionSheet
+    }
+
     @objc
     func appDidBecomeActiveNotification() {
         // Re-show any components that might have been hidden because they were being displayed
@@ -518,13 +525,11 @@ class BrowserViewController: UIViewController,
             options: UIView.AnimationOptions(),
             animations: {
                 self.contentStackView.alpha = 1
-
                 if self.isToolbarRefactorEnabled {
                     self.addressToolbarContainer.alpha = 1
                 } else {
                     self.urlBar.locationContainer.alpha = 1
                 }
-
                 self.presentedViewController?.popoverPresentationController?.containerView?.alpha = 1
                 self.presentedViewController?.view.alpha = 1
             }, completion: { _ in