Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.58%. Comparing base (28bc599) to head (3102661).
Report is 391 commits behind head on dev.

@@            Coverage Diff             @@
##              dev    #9527      +/-   ##
==========================================
+ Coverage   89.82%   90.58%   +0.75%     
==========================================
  Files         412      407       -5     
  Lines       11878    12729     +851     
  Branches     2364     2467     +103     
==========================================
+ Hits        10670    11530     +860     
+ Misses        681      639      -42     
- Partials      527      560      +33     

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Normally if you dont use Localization, you dont need to set Services.AddMudLocalization(); this change makes is compulsory.

However, this has nothing to do with this particular PR. The need for InternalMudLocalizer was introduced in PR #7024, which was already in v6. I explained in detail in these two posts: #8581 (comment).

In short, you just got lucky in v6 by not encountering a component that required InternalMudLocalizer, but now in v7, as more components started utilizing it internally, you hit the problem. However, the necessity for it was established back in mid-2023.