[8.x] Silence Validator Date Parse Warnings

[tomirons]

Using any date comparison validation rule and having the first parameter be another attribute name will generate PHP warnings. In our case, tons of them and from different endpoints. 😱

Problem Code:

<?php
$validator = \Illuminate\Support\Facades\Validator::make([
    'start_date' => '2021-01-01',
    'end_date' => '2021-01-02',
], [
    'start_date' => ['required', 'date_format:Y-m-d', 'before_or_equal:end_date'],
    'end_date'   => ['required', 'date_format:Y-m-d', 'after_or_equal:start_date'],
]);

$validator->validate();

[GrahamCampbell]

Double parsing is gonna slow things down 2x. Better to just silence the error and check if the output is false/null or whatever it does when there's an error?