Symfony version(s) affected: symfony/http-foundation:5.2.0

Description

The new code fails to parse more complex query parameters like:
filter[&&][==][product.code]=demo
which is sent as:
filter[%26%26][%3D%3D][product.code]=demo

The result is something like:

    []] => Array
        (
            [0] => =][product.code]=demo
        )

which is invalid and hex2bin() then reports:
hex2bin(): Hexadecimal input string must have an even length

Possible Solution

The problem is the custom parseQuery() method which fails to parse such input correctly:

symfony/http-foundation@v5.1.9...v5.2.0#diff-b6d0c8db4eac8fff2ef3214f93fdf07ad0c161ba4d238a514ba4ab6633dfea9dR196-R253

The PHP parse_str() method used in v5.1.9 works fine.