No new line break for some at-sign@ in Javadoc comment

We have a string as:

```java
// AUTO-GENERATED DOCUMENTATION AND METHOD.
/**
*

Sample code:
*

{@code

* // This snippet has been automatically generated and should be regarded as a code template only.

* try (EchoServiceClient echoServiceClient =

*     EchoServiceClient.create()) {

*   EchoResponse response =

*       echoServiceClient.chat();

* }

* }

* @param request The request object containing all of the parameters for the API call.
* @throws com.google.api.gax.rpc.ApiException if the remote call fails
* @InternalApi This method is internal used only. Please do not use directly.
*/
```

After running java-format on the above string, the Javadoc comment gets reformatted as:

```java
// AUTO-GENERATED DOCUMENTATION AND METHOD.
/**
* Sample code:
*
*

{@code

   * // This snippet has been automatically generated and should be regarded as a code template only.

   * try (EchoServiceClient echoServiceClient =

   *     EchoServiceClient.create()) {

   *   EchoResponse response =

   *       echoServiceClient.chat();

   * }

   * }

*
* @param request The request object containing all of the parameters for the API call.
* @throws com.google.api.gax.rpc.ApiException if the remote call fails @InternalApi This method
* is internal used only. Please do not use directly.
*/
```

Notice the line break before `@InternalApi ` was removed and a line break was added after `@InternalApi This method`. This makes the method comments hard to read.
Could you please help investigate?
Thank you!

Comece reproduzindo o exemplo de Javadoc fornecido com java-format e compare a entrada e a saída formatada ao redor de @InternalApi. Siga o caminho de formatação do Javadoc para determinar por que essa quebra de linha é removida e, em seguida, adicione ou atualize um teste de regressão mostrando que a quebra é preservada.

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