Fix applying the PSPDFKit settings on configuration changes (#545)

Author: mickael-menu

readium/adapters/pspdfkit/navigator/src/main/java/org/readium/adapter/pspdfkit/navigator/PsPdfKitDocumentFragment.kt

@@ -160,6 +160,8 @@ public class PsPdfKitDocumentFragment internal constructor(
                     }
                     .onSuccess { resetPdfFragment() }
             }
+        } else {
+            resetPdfFragment()
         }
     }