[Bug c++/95434] ICE for CTAD in generic lambda within variadic lambda

[johelegp at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95434

--- Comment #3 from Johel Ernesto Guerrero Peña <johelegp at gmail dot com> ---
Another example: https://godbolt.org/z/Wq1vjP. Perhaps, this too requires
another bug report.
```C++
template <template <class> class T, class... Us>
concept ctadable = requires(Us... us) { T{us...}; };

template <class T>
struct X { T x; };

static_assert(ctadable<X, int>);
```