Allow to report finsh/pause state if Activity isn't resume.

Currently, we only report the ui translation state if the Activity is
resumed. But in the real use case, the developer may call
finishTranslation when the Activity moves to background or lock screen
is shown. We should allow the finish/pause state can be updated for
these cases.

Bug: 183980346
Test: manual. Use sample app, press home and call APIs.
Test: atest CtsTranslationTestCases
Change-Id: I4a5cfab9d272e4d5dc23b2f679b4fbeb4a6c9d20