Merge pull request #17043 from nextcloud/backport/17032/stable-33.1.x

[stable-33.1.x] fix(trashbin): back button behaviour

Author: alperozturk96

app/src/main/java/com/owncloud/android/ui/navigation/NavigatorActivity.kt

@@ -105,8 +105,13 @@ class NavigatorActivity : DrawerActivity() {
             this,
             object : OnBackPressedCallback(true) {
                 override fun handleOnBackPressed() {
+                    val onBackPressListener = supportFragmentManager.fragments
+                        .filterIsInstance<NavigatorOnBackPressListener>()
+                        .firstOrNull()
+
                     when {
                         isDrawerOpen -> closeDrawer()
+                        onBackPressListener?.canInterceptBackPress() == true -> onBackPressListener.interceptBackPress()
                         supportFragmentManager.backStackEntryCount == 1 -> finish()
                         else -> pop()
                     }