Describe the bug

在未设置 APMPLUS_APP_KEY 环境变量时，deer-go 应用程序在服务器初始化期间于 main.go:73 发生崩溃，并出现 panic（运行时错误：无效的内存地址或 nil 指针解引用）。

To Reproduce

Steps to reproduce the behavior:

1. cd flow/agent/deer-go/
2. cp ./conf/deer-go.yaml.1 ./conf/deer-go.yaml
3. cd biz/mcps/python && uv sync
4. ./run.sh -s
5. See panic error

Expected behavior

即使未设置 APMPLUS_APP_KEY，应用程序也应成功启动，并在没有 APMPlus 跟踪功能的情况下运行。

Screenshots

[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xf72d48d]

goroutine 1 [running]:
github.com/cloudwego/hertz/pkg/common/config.(*Options).Apply(...)
/Users/lesion/go/pkg/mod/github.com/cloudwego/hertz@v0.10.0/pkg/common/config/option.go:127
github.com/cloudwego/hertz/pkg/common/config.NewOptions({0xc000125f18, 0x2, 0xf?})
/Users/lesion/go/pkg/mod/github.com/cloudwego/hertz@v0.10.0/pkg/common/config/option.go:264 +0x18d
github.com/cloudwego/hertz/pkg/app/server.New({0xc000125f18?, 0xc0004632c0?, 0xff22980?})
/Users/lesion/go/pkg/mod/github.com/cloudwego/hertz@v0.10.0/pkg/app/server/hertz.go:40 +0x18
github.com/cloudwego/hertz/pkg/app/server.Default({0xc000125f18?, 0x10b37600?, 0xf074801?})
/Users/lesion/go/pkg/mod/github.com/cloudwego/hertz@v0.10.0/pkg/app/server/hertz.go:49 +0x18
main.runServer()
/Users/lesion/code/go/eino-examples/flow/agent/deer-go/main.go:73 +0x150
main.main()
/Users/lesion/code/go/eino-examples/flow/agent/deer-go/main.go:138 +0x32

Version:

Latest commit: a0e96f1 (refactor: migration from OpenAPIV3 to JSONSchema)

Environment:

GOVERSION='go1.23.12'
GOOS='darwin'
GOARCH='amd64'

Additional context