Symfony version(s) affected: 5.2.6

Description
I cannot parse an environment variable into an array.

How to reproduce

# env
TRUSTED_HOSTS="[\"10.0.0.1\", \"10.0.0.2\"]"

# config/packages/framework.yaml
framework:
    trusted_hosts: '%env(json:TRUSTED_HOSTS)%'

I get:

Invalid type for path “framework.trusted_hosts.0”. Expected one of “bool”, “int”, “float”, “string”, but got “array”.

See reproducer repo: https://github.com/Nyholm/sf-issue-40906