Declare DatePeriod properties (#8534)

Migrate skip checks to --EXTENSIONS--, p3

For rationale, see #6787

Extensions migrated in part 3:
* ftp
* gmp
* iconv
* opcache
* shmop

Skip preloading test on windows

Fixed bug #80634 (write_property handler of internal classes is skipped on preloaded JITted code)