[Symfony 6] Add type hints to Drupal\Core\TypedData\Validation\ExecutionContext::getObject(), ::getMetadata(), ::getGroup(), ::getClassName(), ::getPropertyName() and ::getPropertyPath()

Problem/Motivation

Method "Symfony\Component\Validator\Context\ExecutionContextInterface::getObject()" will return "?object" as of its next major version. Doing the same in implementation "Drupal\Core\TypedData\Validation\ExecutionContext" will be required when upgrading.

Method "Symfony\Component\Validator\Context\ExecutionContextInterface::getMetadata()" will return "?MetadataInterface" as of its next major version. Doing the same in implementation "Drupal\Core\TypedData\Validation\ExecutionContext" will be required when upgrading.

Method "Symfony\Component\Validator\Context\ExecutionContextInterface::getGroup()" will return "?string" as of its next major version. Doing the same in implementation "Drupal\Core\TypedData\Validation\ExecutionContext" will be required when upgrading.

Method "Symfony\Component\Validator\Context\ExecutionContextInterface::getClassName()" will return "?string" as of its next major version. Doing the same in implementation "Drupal\Core\TypedData\Validation\ExecutionContext" will be required when upgrading.

Method "Symfony\Component\Validator\Context\ExecutionContextInterface::getPropertyName()" will return "?string" as of its next major version. Doing the same in implementation "Drupal\Core\TypedData\Validation\ExecutionContext" will be required when upgrading.

Method "Symfony\Component\Validator\Context\ExecutionContextInterface::getPropertyPath()" will return "string" as of its next major version. Doing the same in implementation "Drupal\Core\TypedData\Validation\ExecutionContext" will be required when upgrading.

Steps to reproduce

Proposed resolution

Add the type hints.

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet