Fix menu in knx config flow

[emontnemery]

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[home-assistant]

Hey there @Julius2342, @farmio, @marvin-w, mind taking a look at this pull request as it has been labeled with an integration (knx) you are listed as a code owner for? Thanks!

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[farmio]

Could we use more meaningful names for the menus? It would be better readable (translation and tests...)

[farmio]

Tested locally - works fine 👍

Does this need new Lokalise work now since the menu step names changed?

[emontnemery]

Tested locally - works fine 👍

Does this need new Lokalise work now since the menu step names changed?

Yes, we should ideally mend the existing translations. Do you have access to lokalise to do that?

[farmio]

I think I have the same access level as every user. Don't have much experience with Lokalise.
Do the keys have to be manually added again in all languages, or can it be copied over from the previous translation?
What about the now stale ::step::secure_key_source:: keys - they are still visible in Lokalise. I guess they should be deleted somehow.