adding platform: linux/amd64 to the mac build (#9059)

### What problem does this PR solve?

Mac OS build fails on M4. Docker compose requires platform to be
specified to build correctly

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

Co-authored-by: Charles Copley <ccopley@ancera.com>

docker/docker-compose-macos.yml

 
 services:
   ragflow:
+    platform: linux/amd64
     depends_on:
       mysql:
         condition: service_healthy