[libcxx] Add sort.bench.cpp to libcxx/benchmarks/CMakeLists.txt

[hans]

Summary

It was forgotten in D124740. Also pipe the lines through sort.

libcxx/benchmarks/CMakeLists.txt

function(add_benchmark_test name source_file)
   endif()
 endfunction()
 
 
 #==============================================================================
 # Register Benchmark tests
 #==============================================================================
 set(BENCHMARK_TESTS
-    algorithms/make_heap_then_sort_heap.bench.cpp
     algorithms/make_heap.bench.cpp
+    algorithms/make_heap_then_sort_heap.bench.cpp
     algorithms/min_max_element.bench.cpp
     algorithms/pop_heap.bench.cpp
     algorithms/push_heap.bench.cpp
+    algorithms/sort.bench.cpp
     algorithms/sort_heap.bench.cpp
     algorithms/stable_sort.bench.cpp
     algorithms.partition_point.bench.cpp
     allocation.bench.cpp
     deque.bench.cpp
     filesystem.bench.cpp
     function.bench.cpp
     map.bench.cpp