[Bug]: custom variant paintings break

[deli73]

Bug Description

When using commands to update a fancy painting entity's "variant" property, the painting always breaks, even if it fits in the space. My only guess at the cause is the final condition in HangingEntity.survives(), as maybe the painting somehow doesn't recognize itself as not a distinct entity taking up its space?

How to Reproduce?

1. Place a fancy painting.
2. Use the command `/data merge (entity UUID) {variant:"(custom painting variant (in the handcrafted namespace) with the same size)"}
3. Observe the painting update to another painting, and then mysteriously pop off as if it's been obstructed.

Expected Behavior

Painting should remain in place as nothing is obstructing it.

Version

4.0.3

Mod Loader Version

1.21.1 - 0.16.14

Mod Loader

Fabric

Logs or additional context

No response

Code of Conduct

• I have searched the issue tracker and confirmed that the issue has not been reported
• I have checked the FAQ (if one is present) and my issue is not listed
• I have verified that I am using the latest version of the mod
• I have verified that I have installed all the required dependencies for the mod
• I have verified that I do not have Optifine installed. We will close issues if we detect Optifine is in your pack. We cannot fix Optifine issues. Please do not report issues with Optifine present.

[deli73]

paintings with custom variants also seem to pop off after reloading the world.