Fix keyboard remain after dismissing notification

We introduced mRemoteEditImeVisible checking in
RemoteInputController#removeRemoteInput by CL[1]
to resolve a IME layer issue.

Update this flag when remove notification to remove
the active remote input.

[1]: I7dbc8e656505f79b1bfb198c458d3b95a645c1cb

Fix: 183678882
Test: Manual test with bug flow
   1) Receive a chat notification
   2) Tap direct reply to show the keyboard
   3) Swipe to dismiss notification
   4) Verify the keyboard will be dismiss as expected
Test: atest NotificationRemoteInputManagerTest
Change-Id: I7c1af7f0f26906361aa29425fb77e94e5ed4cd12