Function translateTimeString() translate part of the word if translations are overlapping

[aK0nshin]

In Russian translation we have string:
https://github.com/jenssegers/date/blob/master/src/Lang/ru.php#L46

'august' => '{0}август|{1}августа',

So second translation contains first one and when this goes to str_ireplace() we have only part of word replaced:

$time = "02 августа 2018 года 14:29";
$terms = [
    //...
    "august" => [
        0 => "август",
        1 => "августа",
    ],
    //...
];

// Replace the localized words with English words.
$translated = $time;
foreach ($terms as $english => $localized) {
    $translated = str_ireplace($localized, $english, $translated);
}

var_dump($translated); // string(31) "02 augustа 2018 года 14:29"

https://github.com/jenssegers/date/blob/master/src/Date.php#L437

[aK0nshin]

My solution: #305