Wake device from alphanumeric keyboards

Internal alphanumeric keyboards used to not wake the device by default.
This changes the behavior such that any key down from an alphanumeric
keyboard should wake the device.

Bug: 352856881
Test: atest inputflinger_test
Test: m checkinput
Test: Manually on device
Flag: com.android.input.flags.enable_alphabetic_keyboard_wake
Change-Id: I368bb09972d109e115cbb2063e40cf3a7e395922