fix(ocm): ensure capabilities are set on OCMProvider from discovery data

- Call `setCapabilities()` with `capabilities` field when available.
- Prevents loss of provider capability information during discovery.

Signed-off-by: Micke Nordin <kano@sunet.se>

lib/private/OCM/Model/OCMProvider.php

@@ -227,6 +227,7 @@ class OCMProvider implements ICapabilityAwareOCMProvider {
 		}
 		$this->setResourceTypes($resources);
 		$this->setInviteAcceptDialog($data['inviteAcceptDialog'] ?? '');
+		$this->setCapabilities($data['capabilities'] ?? []);
 
 		if (isset($data['publicKey'])) {
 			// import details about the remote request signing public key, if available