For #23500: creditcards: hide keyboard when pausing fragment

Right now, the soft keyboard will remain open when we exit the "Add Card"
screen. Let's make it so that the soft keyboard is automatically closed when
leaving this screen.

app/src/main/java/org/mozilla/fenix/settings/creditcards/CreditCardEditorFragment.kt

@@ -15,6 +15,7 @@ import androidx.navigation.fragment.navArgs
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
+import mozilla.components.support.ktx.android.view.hideKeyboard
 import org.mozilla.fenix.R
 import org.mozilla.fenix.SecureFragment
 import org.mozilla.fenix.databinding.FragmentCreditCardEditorBinding
@@ -82,10 +83,11 @@ class CreditCardEditorFragment : SecureFragment(R.layout.fragment_credit_card_ed
     }
 
     /**
-     * Close any open dialogs or menus and reauthenticate if the fragment is paused and
-     * the user is not navigating to [CreditCardsManagementFragment].
+     * Close the keyboard, any open dialogs or menus and then reauthenticate if the
+     * fragment is paused and the user is not navigating to [CreditCardsManagementFragment].
      */
     override fun onPause() {
+        view?.hideKeyboard()
         menu.close()
 
         redirectToReAuth(