Simpler

We hope that hierarchical headings can be generated automatically, such as 1. xx; 1.1. xx; 1.1.1. xxx; this is the best way to improve productivity.

jdk8_191版本，Linux-x64，启动报stackoverflow

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HOTSECONDS: 19:41:47.967 INFO HotSeconds热部署服务启动成功 Exception in thread "main" java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:386) at sun.instrument.InstrumentationImpl.loadClassAndCallPremain(InstrumentationImpl.java:401) Caused by: java.lang.StackOverflowError at io.opentelemetry.javaagent.bootstrap.InjectedClassHelper.loadHelperClass(InjectedClassHelper.java:55) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at...

In the Notion plugin, the preview of images cannot be properly adjusted.

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### Preflight Checklist * [x] I agree to follow the [Code of Conduct](https://github.com/jgraph/drawio/blob/master/CODE_OF_CONDUCT.md) that this project adheres to. * [x] I have searched the issue tracker for a feature request...