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

crates/oxide_vm/tests/async_tests.rs

@@ -4,6 +4,7 @@
 use std::sync::Arc;
 
 use oxide_compiler::compiler::Compiler;
+use oxide_compiler::DefaultCompilerService;
 use oxide_parser::Allocator;
 use oxide_vm::promise::promise_settled_value;
 use oxide_vm::vm::Vm;
@@ -20,6 +21,7 @@ fn eval(source: &str) -> String {
         Err(e) => return format!("compile error: {e}"),
     };
     let mut vm = Vm::new();
+    vm.set_compiler_service(Arc::new(DefaultCompilerService));
     match vm.run(&Arc::new(module)) {
         Ok(result) => format_value(&vm, result),
         Err(e) => format!("vm error: {e}"),