Fixes to horiz text alignment

[MyreMylar]

fixes #617

[codecov]

Codecov Report

Attention: Patch coverage is 81.81818% with 4 lines in your changes missing coverage. Please review.

Project coverage is 95.81%. Comparing base (cfe3699) to head (69093e5).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
pygame_gui/core/drawable_shapes/drawable_shape.py	81.81%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #653      +/-   ##
==========================================
- Coverage   95.83%   95.81%   -0.03%     
==========================================
  Files          90       90              
  Lines       14080    14094      +14     
==========================================
+ Hits        13494    13504      +10     
- Misses        586      590       +4     

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