Bug: Validation rule with `*` gets incorrect values as dot array syntax

[kenjis]

From #8079 (comment)

The name key is contacts.just.friends.*.name, not contacts.*.name.

    public function index(): string
    {
        // Extend the user guide case and add one more layer.
        $requestData = [
            'contacts' => [
                'name' => 'Joe Smith',
                'just' => [
                    'friends' => [
                        [
                            'name' => 'Fred Flinstone',
                        ],
                        [
                            'name' => 'Wilma',
                        ],
                    ],
                ],
            ],
        ];

        $this->validator = \Config\Services::validation();
        $this->validator->setRules([
            'contacts.*.name' => 'required|max_length[1]',
        ]);

        dd(
            $this->validator->run($requestData),
            $this->validator->getErrors(),
            $this->validator->getValidated()
        );
    }

$this->validator->run(...) boolean false
⧉⌕$this->validator->getErrors() array (2)
    ⇄contacts.just.friends.0.name => string (63) "The contacts.*.name field cannot exceed 1 characters in length."
    ⇄contacts.just.friends.1.name => string (63) "The contacts.*.name field cannot exceed 1 characters in length."
$this->validator->getValidated() array (0)
⧉ Called from .../app/Controllers/Home.php:34 [dd()]

[kenjis]

There is the bug.

CodeIgniter4/system/Validation/Validation.php

Lines 170 to 176 in 0872a21

	if (strpos($field, '*') !== false) {
	$values = array_filter(array_flatten_with_dots($data), static fn ($key) => preg_match(
	'/^'
	. str_replace(['\.\*', '\*\.'], ['\..+', '.+\.'], preg_quote($field, '/'))
	. '$/',
	$key
	), ARRAY_FILTER_USE_KEY);

$values = {string[2]} ["Fred Flinstone", "Wilma"]
 contacts.just.friends.0.name = "Fred Flinstone"
 contacts.just.friends.1.name = "Wilma"

This code came from: d6a2327f and 7dce1aa7d58

[kenjis]

            if (strpos($field, '*') !== false) {
                $flatten = array_flatten_with_dots($data);
                $pattern ='/^'
                    . str_replace(['\.\*', '\*\.'], ['\..+', '.+\.'], preg_quote($field, '/'))
                    . '$/';

                $values = array_filter($flatten, static fn ($key) => preg_match(
                    $pattern,
                    $key
                ), ARRAY_FILTER_USE_KEY);

                // if keys not found
                $values = $values ?: [$field => null];
            } else {

$flatten = {array[4]} 
 contacts.name = "Joe Smith"
 contacts.just.friends.0.name = "Fred Flinstone"
 contacts.just.friends.1.name = "Wilma"
 DBGroup = null

$pattern = /^contacts\..+\.name$/

$values = {string[2]} ["Fred Flinstone", "Wilma"]
 contacts.just.friends.0.name = "Fred Flinstone"
 contacts.just.friends.1.name = "Wilma"