fix(onboarding): prevent welcome screen text overflow in localized languages

[Hars465465]

What

Screenshot

Fixes bug(s)

• Fixes:

Part of

• 🎯 What can I work on ? (mobile app) #525

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 9.13%. Comparing base (4d9c7fc) to head (5f77fa3).
⚠️ Report is 1326 commits behind head on develop.

Files with missing lines	Patch %	Lines
.../smooth_app/lib/pages/onboarding/welcome_page.dart	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           develop   #7386      +/-   ##
==========================================
- Coverage     9.54%   9.13%   -0.42%     
==========================================
  Files          325     624     +299     
  Lines        16411   36534   +20123     
==========================================
+ Hits          1567    3337    +1770     
- Misses       14844   33197   +18353     

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[g123k]

Which issue do you fix?
I see no issue assigned to you (= this a requirement before beginning)

[Hars465465]

Thanks for pointing this out.

This PR fixes issue #7386 (welcome screen text overflow for localized languages).

I started working on it before the assignment requirement was clear to me — apologies for that.
I’ll make sure to get explicit assignment before starting work on future issues.

Please let me know if anything needs to be adjusted.

[openfoodfacts-bot]

@Hars465465 can you add a screenshot of your change in the PR ?

[Hars465465]

Here is a screenshot from my local run with the app set to German.

Before this change, the welcome screen text was clipped and the final word
“sind!” was not visible. After removing the fixed height constraint, the
text expands naturally and the full sentence is now displayed.

[Hars465465]

Hi maintainers,

I would really appreciate feedback on this PR.
Happy to make any required changes.

Thanks for your time!