[8.x] Fix attributes returning a collection instead of an array

[kailumworkhouse]

Following on from statamic/cms#11333

Fix implemented through runway.

[github-actions]

Released as part of v8.0.1.

[duncanmcclean]

Rolling this back as its caused a breaking change.

You can likely workaround the issue you were seeing by changing the casts on your model to json or array, instead of (presumably) collection.

[simonworkhouse]

@duncanmcclean Unfortunately we cannot change the cast types in our use-case, but in my opinion the issue really lies within statamic/cms. I'd suggest that it's incorrect behaviour for the Statamic select field type to wrap collections in an array, see statamic/cms#11333

Do you think that we could re-open that issue?

[duncanmcclean]

Are you able to open an issue on the Runway repo, with an example repo demonstrating the issue and I can take a look when I have a chance.

I have a feeling it's probably something that should be fixed on the Runway side (I might be wrong), but we just need to figure out a way to fix it without breaking relationships for others.