Fix #48585: com_load_typelib holds reference, fails on second call

Fix #48585: com_load_typelib holds reference, fails on second call

Whether the type library is cached is actually irrelevant here; what
matters is that the symbols are imported, and since these are not
cached, we have to import them for every request.  And we cannot cache
the symbols, because the import depends on the current codepage, but
the codepage is a `PHP_INI_ALL` setting.