Here we see https://github.com/mongodb/mongo/blob/e0a68f5b8de3d572db5076e8696c7973476dc9cb/src/third_party/SConscript#L196 scons generated header include path is used over bazel, which means old header which might be left in the directory would be included over bazel. We need to remove the scons path if possible, and otherwise switch the include order.