Arthur Hung 0099ca8fab Ignore back invoke when window focus has lost
The back invoke target could lost focus during back navigation.
To prevent the non-focused window could still trigger back action cause
some unexpected behavior, this CL will listen focus changed and skip the
back invoke call.

Test: launch a trampoline activity and trigger back before next activity
shown.
Test: atest WindowOnBackInvokedDispatcherTest
Bug: 238050065

Change-Id: Ifd345b2283c5d07628e2884db6e4e13f3ec31e83
2022-07-20 04:26:45 +00:00
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2022-06-22 13:19:14 -07:00
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2022-06-20 09:14:03 +00:00
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