refactor: 动态编译改经 CompilerService 注入，oxide_vm 去编译器依赖

crates/oxide_vm/tests/global_builtin_writable_tests.rs

@@ -9,6 +9,7 @@
 use std::sync::Arc;
 
 use oxide_compiler::compiler::Compiler;
+use oxide_compiler::DefaultCompilerService;
 use oxide_parser::Allocator;
 use oxide_vm::vm::Vm;
 
@@ -17,6 +18,7 @@ fn eval_truthy(source: &str) {
     let program = oxide_parser::parse(&allocator, source).expect("parse");
     let module = Compiler::new().compile(&program).expect("compile");
     let mut vm = Vm::new();
+    vm.set_compiler_service(Arc::new(DefaultCompilerService));
     let result = vm.run(&Arc::new(module)).expect("run");
     assert!(result.is_bool() && result.as_bool(), "expected true, got: {result:?}\nsource: {source}");
 }