T15880 route getname

[niden]

Hello!

• Type: bug fix
• Link to issue: Route::getName() return type #15880

In raising this pull request, I confirm the following:

• I have read and understood the Contributing Guidelines
• I have checked that another pull request for this purpose does not exist
• I wrote some tests for this PR
• I have updated the relevant CHANGELOG
• I have created a PR for the documentation about this change

Fixed Phalcon\Mvc\Router\Route::getName() and Phalcon\Mvc\Router\Route::getHostname() to also return null
Fixed Phalcon\Mvc\Router\RouteInterface::getName() and Phalcon\Mvc\Router\RouteInterface::getHostname() to also return null

Thanks