Strage behavior with casts

[etdte]

• Laravel Version: 8.28.0
• PHP Version: 8.0.2
• Database Driver & Version: sqlite version 3.32.3. Postgres 13.0

Description:

I've noticed strage behavior of casts, when same cast class works perfectly when $guarded array of the model is emply, and does not work when saving model which has values in $guarded attribute.

Steps To Reproduce:

1. Clone https://github.com/etdte/poc-cast-issue
2. Install Composer dependecies.
3. Run ProofTest test ./vendor/bin/phpunit --filter=ProofTest.

[driesvints]

Please re-create the repo with any custom changes committed separately from the base Laravel skeleton.

[etdte]

Here is a new one, with every change commited separetely.

https://github.com/etdte/laravel-issue-36285