fix: Prevent infinity loops errors by validating challengeData

[eremia2001]

Description

This pull request fixes a bug in the edit-[challenge].vue component where the challengeData object was not properly initialized and validated. The issue caused methods like .trim() to be called on undefined values, leading to a TypeError. This change ensures that challengeData is properly checked before accessing its properties, thus preventing errors related to undefined attributes.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Translation updates (fix/improve or add new translations)

Fixes Bootstrap-Academy/Bootstrap-Academy#149

My Bootstrap Academy username: eremiya01

[Lauritz-Tieste]

Good work! It works wonderfully (even without the Nuxt version update).
Unfortunately I don't have the rights to create a review and I can't merge the code.

[Defelo]

@eremia2001 why did you change the package-lock.json? If the changes there are not required to solve this issue, please revert these changes.

[eremia2001]

@Defelo Hey, i had some synching issues thats why .But i am going to revert the changes if its not needed

[Defelo]

@Lauritz-Tieste could you test this again please, so we can merge this?

[github-actions]

Preview deployed to https://ef2fead1.academy-preview.pages.dev (total size: 14M)

[eremia2001]

i also tested it once again. it works as before . I apologize for the mess .

[Lauritz-Tieste]

Yeah, everything works! 👍

[TheMorpheus407]

@eremia2001 Du darfst mir sehr gerne auch die Rechnung per Mail stellen - alle Infos dazu hier

Danke fürs mitmachen! Und ich hoffe, du hattest Spaß und machst weiterhin mit :)

[eremia2001]

Vielen lieben Dank! ❤️
Ich hatte sehr viel Spaß und bedanke mich für die Möglichkeit diese Erfahrung zu sammeln.
Ich schicke dir bald die Rechnung.

[eremia2001]

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