Queue jobs with SerializesModels fail when eloquent collections are deserialized

[Brenneisen]

• Laravel Version: 5.8.29
• PHP Version: 7.3.7
• Database Driver & Version: MySQL 8.0

Description:

After #29136 the deserialization of eloquent collections fails if elements are deleted in the meantime.

Steps To Reproduce:

$event = new Event(User::all());

$serialized = serialize($event);

User::find(1)->delete();

unserialize($serialized); // It breaks with Undefined offset: 1

[driesvints]

PR was merged.