Cannot start Java 11 with JMX enabled in Ubuntu

When trying to start a Spring Boot app with a JRE locally installed in the host system (under `/run/host/usr/lib/jvm/java-11-openjdk-amd64`), I get the following exception on startup:

Error: Config file not found: /run/host/usr/lib/jvm/java-11-openjdk-amd64/conf/management/management.properties

That file actually exists, but it's a symlink that points to `/etc/java-11-openjdk/management/management.properties`, which is probably not "visible" to the flatpak (it should be mapped to /run/host/etc/java-11-openjdk/management/management.properties). If I disable JMX, it works instead, but this disables Spring Boot app Lifecycle Management.

Is there a workaround?

使用主機上安裝的 Java 11 並啟用 JMX 的 Spring Boot 應用程式重現啟動失敗。檢查 Flatpak 如何公開 /run/host/usr/lib/jvm/java-11-openjdk-amd64/conf/management/management.properties 及其符號連結 /etc/java-11-openjdk/management/management.properties。檔案能在 Flatpak 內解析，且應用程式在啟用 JMX 的情況下啟動，即表示完成。

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