[Feature in SDK]: Add getCurrent() method to ApplicationInstallationRepositoryInterface

[KarlsonComplete]

Description

Call to an undefined method Bitrix24\SDK\Application\Contracts\ApplicationInstallations\Repository\ApplicationInstallationRepositoryInterface::getCurrent()

The ApplicationInstallationRepositoryInterface is missing the getCurrent() method definition, which is being used in the Unlink use case.
Fix suggestion:
Add the following method signature to ApplicationInstallationRepositoryInterface:

public function getCurrent(): ApplicationInstallationInterface;
This will align the interface with its usage and resolve the PHPStan error.

Example

No response