fix: Adapt return type for Nextcloud 26

[juliusknorr]

Changed in nextcloud/server#36120

[come-nc]

ERROR: InvalidReturnType - lib/ACL/ACLStorageWrapper.php:235:35 - The declared return type 'false|int' for OCA\GroupFolders\ACL\ACLStorageWrapper::filesize is incorrect, got 'bool|int' (see https://psalm.dev/011)
	public function filesize($path): false|int|float {

ERROR: InvalidReturnStatement - lib/ACL/ACLStorageWrapper.php:239:10 - The inferred type 'bool|int' does not match the declared return type 'false|int' for OCA\GroupFolders\ACL\ACLStorageWrapper::filesize (see https://psalm.dev/128)
		return parent::filesize($path);

[march42]

This fixes issue #2264 on my test instance and makes beta3 usable. @nursoda

[nursoda]

@march42 Thanks for the hint! I just verified, it also does fix the issue for me. After modifying the three files accordingly, and re-activating groupfolders, all works fine and I see no error messages in nextcloud.log.

[nursoda]

In NC 26 beta4 I get errors again. I've documented them in my initial issue report #2264.

[come-nc]

In NC 26 beta4 I get errors again. I've documented them in my initial issue report #2264.

Yes because there was no new release of groupfolders application yet.