[DeadCode] Handle InterpolatedStringPart crash on RemoveUnusedForeachKeyRector

[samsonasik]

Given the following code:

<?php

namespace Rector\Tests\Issues\IndentationCrash\PrintCrash;

final class InterpolatedStringPart
{
    public function test(array $checkInputs): void
    {
        foreach ($checkInputs as $index => $checkInput) {
            echo "Input#{$index}: Wrong tokenTime";
        }
    }
}

got crash:

There was 1 error:

1) Rector\Tests\Issues\PrintCrash\PrintCrashTest::test with data set #0 ('/Users/samsonasik/www/rector-...hp.inc')
Error: Call to undefined method Rector\PhpParser\Printer\BetterStandardPrinter::pInterpolatedStringPart()

[samsonasik]

Fixed 🎉

[samsonasik]

All checks have passed 🎉 @TomasVotruba I am merging it ;)