databases/mysql80-server not building in 2025Q3

[Stephen Borrill <netbsd%precedence.co.uk@localhost>]

I'm trying to build databases/mysql80-server on 10.1_STABLE/amd64 from 
2025Q3 and getting errors similar to the failures in the bulk build logs:

https://releng.netbsd.org/pkgreports/shadow/HEAD/NetBSD-10.0-x86_64/20250920.0614/mysql-server-8.0.40nb6/build.log

I say "similar" as I'm only getting errors at 11% in the build, i.e.
/pkg_comp/obj/pkgsrc/databases/mysql80-server/default/mysql-8.0.40/plugin/x/protocol/plugin/encoder_file_output.h:100:61: error: cannot convert 'absl::lts_20250814::string_view' {aka 'std::basic_string_view<char>'} to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
/pkg_comp/obj/pkgsrc/databases/mysql80-server/default/mysql-8.0.40/plugin/x/protocol/plugin/encoder_file_output.h:132:34: error: no match for 'operator+' (operand types are 'const char [3]' and e'absl::lts_20250814::string_view' {aka 'std::basic_string_view<char>'})
/pkg_comp/obj/pkgsrc/databases/mysql80-server/default/mysql-8.0.40/plugin/x/protocol/plugin/messages_used_by_server.cc:52:66: error: no matching function for call to 'std::set<std::__cxx11::basic_string<char> >::count(absl::lts_20250814::string_view)'

I'm not seeing the earlier errors at 8%.

--
Stephen