Clear pendingAction when pausing PreCallCoordinator

When resumed runNextAction() will assert that pendingAction is null so if there's any it won't be interrupted. When the coordinator is paused all dialogs and pending actions must be discarded. If the pending action is not properly discarded it will still assert when trying to call finish().

Bug: 69069675
Test: PreCallCoordinatorImplTest
PiperOrigin-RevId: 176420108
Change-Id: Ie89bda3621371a105dc58ff02d83812194a1ea0b
diff --git a/java/com/android/dialer/precall/impl/PreCallCoordinatorImpl.java b/java/com/android/dialer/precall/impl/PreCallCoordinatorImpl.java
index 485823e..de32cc2 100644
--- a/java/com/android/dialer/precall/impl/PreCallCoordinatorImpl.java
+++ b/java/com/android/dialer/precall/impl/PreCallCoordinatorImpl.java
@@ -76,6 +76,7 @@
       currentAction.onDiscard();
     }
     currentAction = null;
+    pendingAction = null;
   }
 
   void onSaveInstanceState(Bundle outState) {