chore: Update vcpkg configuration and CI workflow

- Removed the `builtin-baseline` from `vcpkg.json` to prevent version database mismatches.
- Updated the CI workflow to synchronize with the stable vcpkg commit `c8696863d371ab7f46e213d8f5ca923c4aef2a00`.
- Adjusted the CI build matrix to remove the x86 Windows build due to cpp-httplib incompatibility.
- Added compiler definitions in `cmake/grpc.cmake` to prevent Windows macro pollution in protobuf-generated headers.

cmake/grpc.cmake

@@ -46,6 +46,13 @@ elseif(MSVC)
     if(MSVC_VERSION GREATER_EQUAL 1920)
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /constexpr:depth2048")
     endif()
+    
+    # Prevent Windows macro pollution in protobuf-generated headers
+    add_compile_definitions(
+        WIN32_LEAN_AND_MEAN  # Exclude rarely-used Windows headers
+        NOMINMAX             # Don't define min/max macros
+        NOGDI                # Exclude GDI (prevents DWORD and other macro conflicts)
+    )
 endif()
 
 # Save YAZE's C++ standard and temporarily set to C++17 for gRPC