emulators/rpcs3: unbreak on FreeBSD < 11.4/12.2 after r540845

Utilities/bin_patch.cpp:788:25: error: no member named 'contains' in 'std::1::set<std::1::basic_string<char>, std::1::less<std::1::basic_string<char> >, std::1::allocator<std::1::basic_string<char> > >'

if (m_applied_groups.contains(patch.patch_group))
    ~~~~~~~~~~~~~~~~ ^

rpcs3/rpcs3qt/patch_manager_dialog.cpp:338:120: error: no member named 'contains' in 'std::1::set<std::1::basic_string<char>, std::1::less<std::1::basic_string<char> >, std::1::allocator<std::1::basic_string<char> > >'

(m_owned_games.find(serial) == m_owned_games.end() || (app_version != patch_key::all && !m_owned_games.at(serial).contains(app_version))))
                                                                                         ~~~~~~~~~~~~~~~~~~~~~~~~ ^