chore: added simple check for formal language and fixes formal languge

[web-mi]

Fixes #

Proposed Changes

[what-the-diff]

PR Summary

• More Formal Language Detection
  Added a feature to check for sentences using formal language in the internationalization (i18n) module. This ensures that the right tone of language is used consistently across the platform.

• Updated Banner Content
  The text in the "banner" section of the German informal language file (de.informal.json) has been updated. This will help improve the user experience for German-speaking users accessing the platform in an informal setting.

• Enhanced Error Messages
  We've improved the user encounter during error instances by revamping error messages in the "modal" section of the de.informal.json file. This will give users a clearer understanding of what went wrong.

• Email Communication Improvements
  Changes have been made in the "email" section of the de.informal.json file, including the addition of new text and updates to the existing text. This enhances clarity and guidance in email communication with users.

• App Text Refresh
  We've updated the text in the "app" section of the de.informal.json file, keeping the language and messaging consistent for an overall improved user experience within the app.

• Two-Factor Authentication Clarification
  Revised explanatory texts in the "twoFactorAuth" section of the German language file (de.json). This makes two-factor authentication instructions and notifications more user-friendly and comprehensible.

[sonarcloud]

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