fix(files): add tiptap-text-direction extension to support RTL

[JuliaKirschenheuter]

📝 Summary

• Resolves: RTL support #882

Now it is possible to detect RTL writing style for languages, which requires RTL. Using https://github.com/amirhhashemi/tiptap-text-direction extension. This version works for:

• Paragraph
• Heading
• Lists

🖼️ Screenshots

🏚️ Before	🏡 After

🏁 Checklist

• Code is properly formatted (npm run lint / npm run stylelint / composer run cs:check)
• Sign-off message is added to all commits
• Tests (unit, integration and/or end-to-end) passing and the changes are covered with tests
• Documentation (README or documentation) has been updated or is not required

[hamza221]

Looks good 🙏🏼

[max-nextcloud]

The test failures look related as now dir="ltr" is include in some of the html output of the unit tests. I think you can just adjust the expectation to match the actual outcome - and we get a test for this extension for free.

Other than that and the linter fix this looks great. Thanks for looking into it!

Would be nice if we could backport it as I think it really fixes a UX bug for rtl and mixed language use.

[JuliaKirschenheuter]

/backport to stable28

[JuliaKirschenheuter]

/backport to stable29

[JuliaKirschenheuter]

/backport to stable30

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 37.99%. Comparing base (3fe2d5c) to head (6c1bcf3).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6874      +/-   ##
==========================================
+ Coverage   37.85%   37.99%   +0.13%     
==========================================
  Files         750      735      -15     
  Lines       42637    42498     -139     
  Branches     1273     1258      -15     
==========================================
+ Hits        16142    16146       +4     
+ Misses      25873    25745     -128     
+ Partials      622      607      -15     

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[juliusknorr]

Change looks sane, @max-nextcloud could you also have a quick look/approval before merging?

[max-nextcloud]

Code changes look good. Thanks for taking care of this.
🚀

[max-nextcloud]

Not sure what happened with the cypress tests. Restarted them.