Disable Darwin build

Author: yufengwangca

BUILD.gn

@@ -394,9 +394,10 @@ if (current_toolchain != "${dir_pw_toolchain}/default:default") {
     enable_linux_rvc_app_build =
         enable_default_builds && (host_os == "linux" || host_os == "mac")
 
+    # TODO: #37983: Add darwin support for libdatachannel
     # Build the Linux Camera app example.
     enable_linux_camera_app_build =
-        enable_default_builds && (host_os == "linux" || host_os == "mac")
+        enable_default_builds && (host_os == "linux")
 
     # Build the cc13x2x7_26x2x7 lock app example.
     enable_cc13x2x7_26x2x7_lock_app_build = enable_ti_simplelink_builds