[php-src] Issue #8048: disk_*_space uses statvfs on macOS and it returns inaccruate results for some filesystems

Issue: https://github.com/php/php-src/issues/8048 Author: risner ### Description The following code: ```php <?php print disk_total_space("/nfs1") . "\n";?> ``` Resulted in this output: ``` 198919206912 ``` But I expected this output instead: ``` 60518056220 ``` The code works correctly for local filesystems, and fails on NFS. If I remember correctly the posix standard is not required to provide correct information. Should php never be using the statvfs call? Data points for NFS: php total 198919206912 correct total 30985244784640 df total 30259028110 vfs total 194257038 fs f_bsize 512 vfs 1048576 fs f_iosize 1048576 vfs f_frsize 512 fs f_blocks 60518056220 vfs 388514076 fs f_bfree 20573829227 vfs 3393960043 fs f_bavail 20573829227 vfs 3393960043 Data points for local: php total 245107195904 vfs 245107195904 correct total 245107195904 df total 3496966385312 vfs total 3496966385312 fs f_bsize 4096 vfs 1048576 fs f_iosize 1048576 vfs f_frsize 4096 fs f_blocks 59840624 vfs 59840624 fs f_bfree 5153807 vfs 5153807 fs f_bavail 5153807 vfs 5153807 ### PHP Version PHP 7.4 ### Operating System macOS 12.1