Idea for lineIf method in SimpleMessage class

[crojasaragonez]

Method lineIf in class Illuminate\Notifications\Messages\SimpleMessage receives two params

1. boolean with a condition
2. value to add to the message in case the first condition is true.

Scenario:
let's imagine that the second parameter is an expensive operation, for instance
Invoice::where('expired_date', '>=' Carbon::today()))->count().

Right now, no matter if the first parameter is false, the second operation will always get executed.

Proposal:

Allow the second parameter to be a callable and only run the code if the first parameter is true just like we do in the when method in our query builder.

$query->when(false, fn ($q) => $q->where(...))