Symfony version(s) affected

6.3.6

Description

#52021 introduced an issue when form children are named like integers.

When handling the request values are re-indexed and loose their submitted index value.

How to reproduce

See reproducer with failing test case https://github.com/symfony/symfony/compare/5.4...dmaicher:symfony:reproducer_form_integer_children?expand=1

Where the first child named 0 will get the submitted value for the second child named 1 😕

Possible Solution

Revert change?

Additional Context

No response