TouchMode (6.2/n) Fully detaching touch mode from focus event (native)

Bug: 193718270
Test: atest inputflinger_tests
Test: atest libinput_tests
Test: atest FrameworksCoreTests
Test: atest CtsInputMethodTestCases
Test: atest CtsInputTestCases
Test: atest CtsSecurityTestCases
Test: atest CtsWindowManagerDeviceTestCases
Change-Id: I334c63d781ee8e8c13d21cc4a6cf323d885fc985