Add missing relationship check in Asset Transformer

[marcusmoore]

Description

This PR simply checks to see if the model relationship exists on the asset being transformed before attempting to use one of it's properties like we do elsewhere in the transformer.

Fixes #13198

Type of change

• Bug fix (non-breaking change which fixes an issue)

[shortcut-integration]

This pull request has been linked to Shortcut Story #23425: Add missing relationship check in AssetTransformer.

[what-the-diff]

PR Summary

• Improved Asset Transformer Configuration
  The update in the AssetsTransformer.php file ensures that the eol field (end of line) is now assigned only when the model exists and when the eol property has a value. This will help avoid unnecessary assignments and ensure data consistency.

[snipe]

In theory, it shouldn’t even be possible to have an asset without a model tho?

[marcusmoore]

I think that is the case but someone ran into that issue and I noticed other places in the transformer doing checking for existence already. Maybe the model was soft deleted and not loaded in the controller?