Parity issue: the creaking heart can be pushed by pistons on bedrock

On Bedrock, creaking hearts are moveable with pistons, meanwhile on Java, they aren't. Other than being a parity issue, this causes further problems, such as those described in MCPE-187298, basically resulting in the heart remaining active but unlinking itself from any creakings present.

Steps to reproduce:

1. Place a creaking heart.
2. Place a piston facing towards it.
3. Activate the piston.

Observed results:
The piston will push the creaking heart.

Expected results:
The creaking heart will not be pushed, just like on Java.