Bug: Parameter‑level #[Schema] wraps output in extra definition key

[micbenner]

Hi there

When using a parameter level Schema override e.g.:

public function __invoke(
    #[Schema(
        definition: [
            'description' => 'This parameter has some complex definition which warrants manually entering the schema.',
        ],
    )]
    string $test,
}

The output schema for the property will look like this:

[
    'type' => ['string'],
    'definition' => [
        'description => '...',
    ],
]

I think the culprit is here, where it should just return $this->definition, instead of ['definition' => $this->definition]:

server/src/Attributes/Schema.php

Lines 132 to 138 in 9d2e7e4

	public function toArray(): array
	{
	if ($this->definition !== null) {
	return [
	'definition' => $this->definition,
	];
	}