[lldb][test] Move std::ranges::ref_view from libcxx to generic directory

This just moves the test from `libcxx` to `generic`. There are currently no `std::ranges::ref_view` formatters for libstdc++ so I didn't add a test-case for it.

Split out from llvm#146740

Author: Michael137

lldb/test/API/functionalities/data-formatter/data-formatter-stl/libcxx/ranges/ref_view/Makefile renamed to lldb/test/API/functionalities/data-formatter/data-formatter-stl/generic/ranges/ref_view/Makefile

@@ -1,5 +1,3 @@
-USE_LIBCPP := 1
-
 CXX_SOURCES := main.cpp
 CXXFLAGS_EXTRAS := -std=c++20
 

lldb/test/API/functionalities/data-formatter/data-formatter-stl/libcxx/ranges/ref_view/TestDataFormatterLibcxxRangesRefView.py renamed to lldb/test/API/functionalities/data-formatter/data-formatter-stl/generic/ranges/ref_view/TestDataFormatterStdRangesRefView.py

@@ -8,7 +8,7 @@
 from lldbsuite.test import lldbutil
 
 
-class LibcxxRangesRefViewDataFormatterTestCase(TestBase):
+class StdRangesRefViewDataFormatterTestCase(TestBase):
     def check_string_vec_children(self):
         return [
             ValueCheck(name="[0]", summary='"First"'),
@@ -27,10 +27,7 @@ def check_string_vec_ref_view(self):
     def check_foo(self):
         return ValueCheck(name="vec", children=self.check_string_vec_children())
 
-    @add_test_categories(["libc++"])
-    @skipIf(compiler=no_match("clang"))
-    @skipIf(compiler="clang", compiler_version=["<", "16.0"])
-    def test_with_run_command(self):
+    def do_test(self):
         """Test that std::ranges::ref_view is formatted correctly when printed."""
         self.build()
         (self.target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
@@ -69,3 +66,10 @@ def test_with_run_command(self):
                 )
             ],
         )
+
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(compiler="clang", compiler_version=["<", "16.0"])
+    @add_test_categories(["libc++"])
+    def test_libcxx(self):
+        self.build(dictionary={"USE_LIBCPP": 1})
+        self.do_test()