Fix language flavors in holiday

[gjohansson-ST]

Proposed change

Language fix for holiday integration.
Library only support overall country language codes mainly so for example nb (Norsk bokmål) isn't resolving to no which is needed for the correct language.
This fix sets the default language for the country if the language is not found.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes When setting up the holiday integration, english instead of norwegian is used as language for the calendar entries #107118
• This PR is related to issue:
• Link to documentation pull request:

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[home-assistant]

Hey there @jrieger, mind taking a look at this pull request as it has been labeled with an integration (holiday) you are listed as a code owner for? Thanks!

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[gjohansson-ST]

@jrieger what do you think?

[jrieger]

Looks good for me. Could you add a test?

[gjohansson-ST]

I added the test but what I mean do we really want to have the default language for the country as the fallback language or should that always be English or what do you think?

Let's say I want to have Portugal calendar because I have a holiday home in that country. Would I (as Swede having my HA configured with Swedish as example) want to have the calendar then in English or in Portuguese?
It depends I guess but we need to make a choice and if Portuguese then this PR is complete, if English then it just became much more advanced.

[jrieger]

IMHO it's more important to provide people living in Norway their calendar in their language, than paying attention on some edge cases like holiday apartments.

[stigvi]

FYI: I have checked the pull request on my installation and it is working as expected with norwegian language.

:-)

[edenhaus]

Thanks @gjohansson-ST 👍