Revert "Fix the logics in ImeFocusController#onPostWindowFocus"

This reverts commit a56779d1ab [1].

Reason for revert:
Caused multiple test failures in CtsInputMethodTestCases

 [1]: I68bb95fc3cbfe1f5992ccf87694b34c3e52bb31f

Bug: 153612876
Fix: 154250671
Test: atest CtsInputMethodTestCases
Change-Id: Ibf6143f46ae18e41e8ecfa50f523216e7340adda

core/java/android/view/ImeFocusController.java

@@ -123,7 +123,7 @@ public final class ImeFocusController {
         }
         // Update mNextServedView when focusedView changed.
         final View viewForWindowFocus = focusedView != null ? focusedView : mViewRootImpl.mView;
-        onViewFocusChanged(viewForWindowFocus, viewForWindowFocus.hasFocus());
+        onViewFocusChanged(viewForWindowFocus, true);
 
         immDelegate.startInputAsyncOnWindowFocusGain(viewForWindowFocus,
                 windowAttribute.softInputMode, windowAttribute.flags, forceFocus);