Fix requiresCharging false value ignored issue

If a SyncRequest builder is used to create a sync
request and setRequiresCharging(bool) is used,
the sync request requires charging irrespective of
the boolean value provided. This cl fixes the issue.

Bug: 35027396

Test: Tested manually by looking for the charging bit in jobscheduler
dumpsys.

Change-Id: I8f642597a64b8964665f41f5ce9ca71529634069
(cherry picked from commit 3a147230a4)

core/java/android/content/SyncRequest.java

@@ -351,7 +351,7 @@ public class SyncRequest implements Parcelable {
          * @param requiresCharging true if sync requires the phone to be plugged in. Default false.
          */
         public Builder setRequiresCharging(boolean requiresCharging) {
-            mRequiresCharging = true;
+            mRequiresCharging = requiresCharging;
             return this;
         }