don't run biome check on windows

Author: ndbroadbent

.github/workflows/mcp.yml

@@ -66,6 +66,7 @@ jobs:
         run: pnpm exec tsc --noEmit
 
       - name: Run Biome checks
+        if: runner.os != 'Windows'
         run: pnpm run check
 
       - name: Build