Set right bounds/configuration for task when positioned in stack.

When AMS.positionTaskInStack API is called we need to make sure
the task has the right bounds and configuration if it is moving
to a different stack.

Bug: 25501082
Change-Id: I2a80aa08a4ee52d860502ab16b6cdb432c954084
diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index f624424..80034b3 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -3420,9 +3420,12 @@
             Slog.w(TAG, "positionTaskInStackLocked: no task for id=" + taskId);
             return;
         }
-        ActivityStack stack =
-                getStack(stackId, CREATE_IF_NEEDED, !ON_TOP);
-        mWindowManager.positionTaskInStack(taskId, stackId, position);
+        final ActivityStack stack = getStack(stackId, CREATE_IF_NEEDED, !ON_TOP);
+
+        task.updateOverrideConfigurationForStack(stack);
+
+        mWindowManager.positionTaskInStack(
+                taskId, stackId, position, task.mBounds, task.mOverrideConfig);
         final boolean stackChanged = task.stack != null && task.stack != stack;
         if (stackChanged) {
             task.stack.removeTask(task, "moveTaskToStack", MOVING);