Version 6 is broken when using a 32bits build of PHP

[stof]

see https://github.com/symfony/symfony/actions/runs/14262540647/job/39977141591#step:5:23 which was a CI job of Symfony running on 32bits with Composer 2.8.7 (which migrated to v6 of this library).

the root cause is that the value of Validator::ERROR_ALL is bigger than PHP_INT_MAX on a 32bits build of PHP (as PHP integers are signed integers) and so becomes a float.

[github-actions]

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[stof]

Note that shivammatur/setup-php supports a way of using a 32bits build of PHP in CI on Ubuntu. See https://github.com/shivammathur/setup-php#multi-arch-setup and shivammathur/setup-php#302 (comment)

It could make sense to add a job running on 32bits (as this package is used as part of Composer, it cannot really drop support for such builds)