Clang 22 Support

[ednolan]

A test clang 22 build failed. The first error was:

[434/500] /usr/local/bin/clang++ -DCMAKE_INTDIR=\"Debug\" -I/src/include -isystem /build/_deps/execution-src/include -stdlib=libc++ -g -std=gnu++26 -MD -MT examples/CMakeFiles/beman.task.examples.c++now-basic.dir/Debug/c++now-basic.cpp.o -MF examples/CMakeFiles/beman.task.examples.c++now-basic.dir/Debug/c++now-basic.cpp.o.d @examples/CMakeFiles/beman.task.examples.c++now-basic.dir/Debug/c++now-basic.cpp.o.modmap -o exampl
es/CMakeFiles/beman.task.examples.c++now-basic.dir/Debug/c++now-basic.cpp.o -c /src/examples/c++now-basic.cpp
FAILED: [code=1] examples/CMakeFiles/beman.task.examples.c++now-basic.dir/Debug/c++now-basic.cpp.o
/usr/local/bin/clang++ -DCMAKE_INTDIR=\"Debug\" -I/src/include -isystem /build/_deps/execution-src/include -stdlib=libc++ -g -std=gnu++26 -MD -MT examples/CMakeFiles/beman.task.examples.c++now-basic.dir/Debug/c++now-basic.cpp.o -MF examples/CMakeFiles/beman.task.examples.c++now-basic.dir/Debug/c++now-basic.cpp.o.d @examples/CMakeFiles/beman.task.examples.c++now-basic.dir/Debug/c++now-basic.cpp.o.modmap -o examples/CMakeFi
les/beman.task.examples.c++now-basic.dir/Debug/c++now-basic.cpp.o -c /src/examples/c++now-basic.cpp
In file included from /src/examples/c++now-basic.cpp:4:
In file included from /src/include/beman/task/task.hpp:8:
In file included from /src/include/beman/task/detail/task_scheduler.hpp:7:
In file included from /build/_deps/execution-src/include/beman/execution/execution.hpp:64:
In file included from /build/_deps/execution-src/include/beman/execution/detail/affine_on.hpp:49:
In file included from /build/_deps/execution-src/include/beman/execution/detail/make_sender.hpp:20:
In file included from /build/_deps/execution-src/include/beman/execution/detail/basic_sender.hpp:27:
In file included from /build/_deps/execution-src/include/beman/execution/detail/basic_operation.hpp:28:
In file included from /build/_deps/execution-src/include/beman/execution/detail/connect_all_result.hpp:16:
In file included from /build/_deps/execution-src/include/beman/execution/detail/connect_all.hpp:27:
/build/_deps/execution-src/include/beman/execution/detail/connect.hpp:87:27: error: static assertion failed: result from transform_sender has no suitable connect()
   87 |             static_assert(::std::same_as<bad_sender, decltype(new_sender())>,
      |                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~