Fix: disable "redundant move" warnings for GCC (#10803)

GCC warns about redundant std::move while clang warns when they are missing, so we silence the less harmful one

(cherry picked from commit 3c59b8e9ec)

cmake/CompileFlags.cmake

@@ -149,6 +149,10 @@ macro(compile_flags)
                 # -flifetime-dse=2 (default since GCC 6) doesn't play
                 # well with our custom pool item allocator
                 "$<$<BOOL:${LIFETIME_DSE_FOUND}>:-flifetime-dse=1>"
+
+                # We have a fight between clang wanting std::move() and gcc not wanting it
+                # and of course they both warn when the other compiler is happy
+                "$<$<COMPILE_LANGUAGE:CXX>:-Wno-redundant-move>"
             )
         endif()