Revert "MudTabs: add WrapHeaders (#9108)"

[henon]

Fixes: #9167
Fixes: #9237

This reverts commit e5bdc0e.

The team decided to roll back PR #9108 due to the following reasons:

• It introduced a regression
• The feature should have been rejected in the first place because multiple stacks of wrapped tabs are actually bad UX design
• It complicates MudTabs for a feature that is actually outdated

@ZephyrZiggurat Notwithstanding the revert we thank you very much for contributing to the library and we hope you'll understand the team decision.

@meenzen FYI

[codecov]

Codecov Report

Attention: Patch coverage is 96.29630% with 1 line in your changes missing coverage. Please review.

Project coverage is 90.86%. Comparing base (28bc599) to head (091d4de).
Report is 292 commits behind head on dev.

Files	Patch %	Lines
src/MudBlazor/Components/Tabs/MudTabs.razor.cs	96.29%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #9234      +/-   ##
==========================================
+ Coverage   89.82%   90.86%   +1.03%     
==========================================
  Files         412      401      -11     
  Lines       11878    12521     +643     
  Branches     2364     2433      +69     
==========================================
+ Hits        10670    11377     +707     
+ Misses        681      605      -76     
- Partials      527      539      +12     

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