fix obj-c custom password recovery controller: hide keyboard

Author: yramanchuk

samples/objc/FirebaseUI-demo-objc/Samples/Auth/FIRCustomPasswordVerificationViewController.xib

@@ -88,14 +88,14 @@
                 <constraint firstItem="Snl-Lc-51V" firstAttribute="trailing" secondItem="6oq-dt-xuF" secondAttribute="trailing" id="pPP-Am-0DL"/>
             </constraints>
             <connections>
-                <outletCollection property="gestureRecognizers" destination="h8T-0K-mDl" appends="YES" id="zvX-Wh-ro4"/>
+                <outletCollection property="gestureRecognizers" destination="R1W-KL-GKA" appends="YES" id="aSn-fa-HeV"/>
             </connections>
             <point key="canvasLocation" x="26.5" y="47.5"/>
         </view>
-        <pongPressGestureRecognizer allowableMovement="10" minimumPressDuration="0.5" id="h8T-0K-mDl">
+        <tapGestureRecognizer id="R1W-KL-GKA">
             <connections>
-                <action selector="onViewSelected:" destination="-1" id="pcD-pW-q9i"/>
+                <action selector="onViewSelected:" destination="-1" id="l44-ce-bBF"/>
             </connections>
-        </pongPressGestureRecognizer>
+        </tapGestureRecognizer>
     </objects>
 </document>