[BUG] template in front of _qualified-id_ instead of _unqualified-id_ in UFCS

[JohelEGP]

Title: template in front of qualified-id instead of unqualified-id in UFCS.

Minimal reproducer (https://cpp2.godbolt.org/z/fTM758bhW):

main: () = {
  _ = std::views::iota(0, 42).std::ranges::to<std::vector>();
}

Commands:

cppfront main.cpp2
clang++18 -std=c++23 -stdlib=libc++ -lc++abi -pedantic-errors -Wall -Wextra -Wconversion -Werror=unused-result -Werror=unused-value -Werror=unused-parameter -I . main.cpp

Expected result:
Cpp1 std::views::iota(0, 42).std::ranges::template to<std::vector>() (https://cpp1.godbolt.org/z/G44hKecs5).

Actual result and error:
Cpp1 std::views::iota(0, 42).template std::ranges::to<std::vector>() (https://cpp1.godbolt.org/z/s5fWYbxdP).

Cpp2 lowered to Cpp1:

//=== Cpp2 type declarations ====================================================


#include "cpp2util.h"

#line 1 "/app/example.cpp2"


//=== Cpp2 type definitions and function declarations ===========================

#line 1 "/app/example.cpp2"
auto main() -> int;

//=== Cpp2 function definitions =================================================

#line 1 "/app/example.cpp2"
auto main() -> int{
#line 2 "/app/example.cpp2"
  static_cast<void>(CPP2_UFCS_TEMPLATE_0(std::ranges::to, (<std::vector>), std::views::iota(0, 42)));
}

Output:

main.cpp2:2:45: error: expected ';' at end of requirement
    2 |   static_cast<void>(CPP2_UFCS_TEMPLATE_0(std::ranges::to, (<std::vector>), std::views::iota(0, 42)));
      |                                             ^
main.cpp2:2:45: error: expected ';' after return statement
main.cpp2:2:55: error: no member named 'to' in namespace 'std::ranges'
    2 |   static_cast<void>(CPP2_UFCS_TEMPLATE_0(std::ranges::to, (<std::vector>), std::views::iota(0, 42)));
      |                                          ~~~~~~~~~~~~~^
raw.githubusercontent.com/hsutter/cppfront/main/include/cpp2util.h:816:16: note: expanded from macro 'CPP2_UFCS_TEMPLATE_0'
  816 |         return FUNCNAME CPP2_UFCS_REMPARENS TEMPARGS (CPP2_FORWARD(obj)); \
      |                ^~~~~~~~
main.cpp2:2:72: error: expected '(' for function-style cast or type construction
    2 |   static_cast<void>(CPP2_UFCS_TEMPLATE_0(std::ranges::to, (<std::vector>), std::views::iota(0, 42)));
      |                                                             ~~~~~~~~~~~^
raw.githubusercontent.com/hsutter/cppfront/main/include/cpp2util.h:816:45: note: expanded from macro 'CPP2_UFCS_TEMPLATE_0'
  816 |         return FUNCNAME CPP2_UFCS_REMPARENS TEMPARGS (CPP2_FORWARD(obj)); \
      |                                             ^~~~~~~~
raw.githubusercontent.com/hsutter/cppfront/main/include/cpp2util.h:800:34: note: expanded from macro 'CPP2_UFCS_REMPARENS'
  800 | #define CPP2_UFCS_REMPARENS(...) __VA_ARGS__
      |                                  ^~~~~~~~~~~
main.cpp2:2:81: error: no member named 'views' in namespace 'std'
    2 |   static_cast<void>(CPP2_UFCS_TEMPLATE_0(std::ranges::to, (<std::vector>), std::views::iota(0, 42)));
      |                                                                            ~~~~~^
raw.githubusercontent.com/hsutter/cppfront/main/include/cpp2util.h:818:3: note: expanded from macro 'CPP2_UFCS_TEMPLATE_0'
  818 | }(PARAM1)
      |   ^~~~~~
5 errors generated.

[JohelEGP]

Fixed: https://cpp1.godbolt.org/z/MThznW56f.