Settings: use _n() instead of __() for numerical updates

[simison]

What?

Closes

Use _n() for translations with numerical values to be able to translate to languages like Russian, where singular/plural isn't used like in English.

Why?

How?

Use of AI Tools

AI assistance: Yes
Tool(s): Cursor

Testing Instructions

Snackbar notices continue work

Screenshots or screencast

No difference in visuals.

Changelog Entry

Added - New feature.
Changed - Existing functionality.
Deprecated - Soon-to-be removed feature.
Removed - Feature.
Fixed - Bug fix.
Security - Vulnerability.
Development Update - Development related updates.

[github-actions]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 69.06%. Comparing base (c9dfaa6) to head (19897b5).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop     #491      +/-   ##
=============================================
+ Coverage      68.50%   69.06%   +0.55%     
  Complexity       957      957              
=============================================
  Files             60       60              
  Lines           4861     4512     -349     
=============================================
- Hits            3330     3116     -214     
+ Misses          1531     1396     -135     

Flag	Coverage Δ
unit	69.06% <ø> (+0.55%)	⬆️

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