Update Leanback's current.txt
Update Leanback's current.txt

The 1.1.0-alpha01.txt and current.txt
should match so that
./gradlew updateApi --rerun-tasks
produces no new output.

Test: ./gradlew updateApi --rerun-tasks has no new output
BUG: 119888068
Change-Id: I99cfc1a4f297515295fa54a18821787af06e9531

AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx