Catch \Error in Transfer::restoreShares

This makes the command more fault tolerant. An \Error can happen when
e.g. the owner of a share is null.
If we don't catch this, the restore process will stop in an unknown
state.

Signed-off-by: Tobia De Koninck <LEDfan@users.noreply.github.com>

apps/files/lib/Service/OwnershipTransferService.php

@@ -286,7 +286,7 @@ class OwnershipTransferService {
 				}
 			} catch (\OCP\Files\NotFoundException $e) {
 				$output->writeln('<error>Share with id ' . $share->getId() . ' points at deleted file, skipping</error>');
-			} catch (\Exception $e) {
+			} catch (\Throwable $e) {
 				$output->writeln('<error>Could not restore share with id ' . $share->getId() . ':' . $e->getTraceAsString() . '</error>');
 			}
 			$progress->advance();