[clang] [Coroutines] Allow [[clang::coro_wrapper]] for class (PR #93268)

llvmbot wrote: @llvm/pr-subscribers-coroutines Author: Chuanqi Xu (ChuanqiXu9) Changes Previously we allow `[[clang::coro_wrapper]]` to be marked with function to allow it to not be checked by `[[clang::coro_return_type]]`. But in our internal practice, there are classes can be return ty

[clang] [Coroutines] Allow [[clang::coro_wrapper]] for class (PR #93268)

https://github.com/ChuanqiXu9 created https://github.com/llvm/llvm-project/pull/93268 Previously we allow `[[clang::coro_wrapper]]` to be marked with function to allow it to not be checked by `[[clang::coro_return_type]]`. But in our internal practice, there are classes can be return type of