Fix MoltenVK subgroup scope error in SPIR-V emission

Removed incorrect __APPLE__ preprocessor check that was forcing Workgroup scope for subgroup operations. MoltenVK requires Subgroup scope, not Workgroup scope. This fixes the error: "SPIR-V to MSL conversion error: Only subgroup scope is supported."

src/shader_recompiler/backend/spirv/emit_spirv_warp.cpp

@@ -7,12 +7,7 @@
 namespace Shader::Backend::SPIRV {
 namespace {
 Id SubgroupScope(EmitContext& ctx) {
-#ifdef __APPLE__
-    // MoltenVK doesn't support Subgroup scope for compute shaders
-    return ctx.Const(static_cast<u32>(spv::Scope::Workgroup));
-#else
     return ctx.Const(static_cast<u32>(spv::Scope::Subgroup));
-#endif
 }
 
 Id GetThreadId(EmitContext& ctx) {