[Bug c++/123080] ICE when constructing parameter type in requires clause of lambda

[eczbek.void at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123080

--- Comment #1 from eczbek.void at gmail dot com ---
Probably related: https://godbolt.org/z/G463dvqn3

```
template<typename T>
using A = [:^^T:];

int main() {
        []<typename T = int> requires(requires { A<T> {}; }) {}();
}
```

```
<source>:5:9: internal compiler error: in write_type, at cp/mangle.cc:2744
    5 |         []<typename T = int> requires(requires { A<T> {}; }) {}();
      |         ^
0x293efa8 diagnostics::context::diagnostic_impl(rich_location*,
diagnostics::metadata const*, diagnostics::option_id, char const*,
__va_list_tag (*) [1], diagnostics::kind)
        ???:0
0x2933d6b internal_error(char const*, ...)
        ???:0
0xb16cd8 fancy_abort(char const*, int, char const*)
        ???:0
0xc76859 mangle_decl(tree_node*)
        ???:0
0x18a7d95 decl_assembler_name(tree_node*)
        ???:0
0x18d1788 assign_assembler_name_if_needed(tree_node*)
        ???:0
0xfb676f cgraph_node::analyze()
        ???:0
0xfb9db1 symbol_table::finalize_compilation_unit()
        ???:0
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned: 1
```