refactor: Use single position cursor

[marc2332]

Less and simpler code!

[codecov]

Codecov Report

Attention: Patch coverage is 82.97872% with 16 lines in your changes are missing coverage. Please review.

Project coverage is 73.90%. Comparing base (b84b961) to head (7e4a5a0).

Files	Patch %	Lines
crates/hooks/src/text_editor.rs	82.05%	14 Missing ⚠️
crates/hooks/src/use_editable.rs	66.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #653      +/-   ##
==========================================
- Coverage   73.90%   73.90%   -0.01%     
==========================================
  Files         194      194              
  Lines       19968    19912      -56     
==========================================
- Hits        14758    14715      -43     
+ Misses       5210     5197      -13     

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