refact: suppress warns on macos (#12449)

Signed-off-by: fufesou <linlong1266@gmail.com>

libs/scrap/src/common/codec.rs

@@ -18,10 +18,17 @@ use crate::{
     CodecFormat, EncodeInput, EncodeYuvFormat, ImageRgb, ImageTexture,
 };
 
+#[cfg(any(
+    feature = "hwcodec",
+    feature = "mediacodec",
+    feature = "vram",
+    target_os = "windows"
+))]
+use hbb_common::config::option2bool;
 use hbb_common::{
     anyhow::anyhow,
     bail,
-    config::{option2bool, Config, PeerConfig},
+    config::{Config, PeerConfig},
     lazy_static, log,
     message_proto::{
         supported_decoding::PreferCodec, video_frame, Chroma, CodecAbility, EncodedVideoFrames,