Mermaid export can generate identifiers with illegal characters

[eoliphan]

Hi i just ran into this. I have a state machine whose id is 'session-manager'. The mermaid export dutifully creates identifiers (or identifier prefixes) with that literal string which isn't legal in the mermaid state machine dsl. For example:

 state "session-manager" as session-manager {
        [*] --> session-manager.Loaded
        session-manager.Loaded --> session-manager.Configured : configFetched

was easy enough to work around by just changing the id, but you guys might want to add a some pre export checks/warnings

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Studio version: 0.125.0