Merge "Prepare for keeping concrete overrides of abstract methods" into main

Tethering/common/TetheringLib/api/current.txt

Tethering/common/TetheringLib/api/module-lib-current.txt

Tethering/common/TetheringLib/api/module-lib-removed.txt

Tethering/common/TetheringLib/api/removed.txt

Tethering/common/TetheringLib/api/system-current.txt

Tethering/common/TetheringLib/api/system-removed.txt

framework-t/api/current.txt

framework-t/api/module-lib-current.txt

framework-t/api/module-lib-removed.txt

framework-t/api/removed.txt

framework-t/api/system-current.txt

framework-t/api/system-removed.txt

framework/api/current.txt

framework/api/module-lib-current.txt

framework/api/module-lib-removed.txt

framework/api/removed.txt

framework/api/system-current.txt

framework/api/system-removed.txt