Catch RejectedExecutionException in BatteryExternalStatsWorker

Bug: 293566053
Test: monitor crash cluster 2768503370795408875
Change-Id: Ib978947329f10765367d64f5ab2b6b583be8e388
diff --git a/services/core/java/com/android/server/power/stats/BatteryExternalStatsWorker.java b/services/core/java/com/android/server/power/stats/BatteryExternalStatsWorker.java
index d5fd017..f4b2f52 100644
--- a/services/core/java/com/android/server/power/stats/BatteryExternalStatsWorker.java
+++ b/services/core/java/com/android/server/power/stats/BatteryExternalStatsWorker.java
@@ -386,7 +386,11 @@
             }
         }
 
-        return mExecutorService.schedule(syncRunnable, delayMillis, TimeUnit.MILLISECONDS);
+        try {
+            return mExecutorService.schedule(syncRunnable, delayMillis, TimeUnit.MILLISECONDS);
+        } catch (RejectedExecutionException e) {
+            return CompletableFuture.failedFuture(e);
+        }
     }
 
     public synchronized Future<?> scheduleWrite() {