Attacking a creaking while you are looking at it will not trigger a sculk sensor.
How to reproduce:
Place a creaking heart between two correctly aligned pale oak logs.
Execute the following command:
/time set nightWait for the creaking to spawn.
Place a sculk sensor next to the creaking.
Attack the creaking.
Expected result:
Sculk sensors would be activated upon attacking a natural creaking.
Observed result:
Sculk sensors are not activated upon attacking a natural creaking.
Sculk Sensors will detect the Resin being generated, but not the attack, it should be noted.