feat: use AppendGlobalHandlers for apmplus

Author: danielqsj

callbacks/apmplus/README.md

@@ -42,7 +42,7 @@ func main() {
 	}
 
 	// Set apmplus as a global callback
-	callbacks.InitCallbackHandlers([]callbacks.Handler{cbh})
+	callbacks.AppendGlobalHandlers(cbh)
 
 	g := NewGraph[string,string]()
 	/*

callbacks/apmplus/README_zh.md

@@ -42,7 +42,7 @@ func main() {
 	}
 
 	// 设置apmplus为全局callback
-	callbacks.InitCallbackHandlers([]callbacks.Handler{cbh})
+	callbacks.AppendGlobalHandlers(cbh)
 
 	g := NewGraph[string,string]()
 	/*

callbacks/apmplus/apmplus_test.go

@@ -37,7 +37,7 @@ func TestApmplusCallback(t *testing.T) {
 		ServiceName: "MyService",
 		Release:     "release",
 	})
-	callbacks.InitCallbackHandlers([]callbacks.Handler{cbh})
+	callbacks.AppendGlobalHandlers(cbh)
 	ctx := context.Background()
 
 	g := compose.NewGraph[string, string]()

callbacks/apmplus/examples/main.go

@@ -45,5 +45,5 @@ func main() {
 	}
 
 	// Set apmplus as a global callback
-	callbacks.InitCallbackHandlers([]callbacks.Handler{cbh})
+	callbacks.AppendGlobalHandlers(cbh)
 }