Enhancement: Enable string_length_to_empty fixer

[localheinz]

This pull request

• enables the string_length_to_empty fixer

Follows #495.

💁‍♂️ For reference, see https://github.com/FriendsOfPHP/PHP-CS-Fixer/blob/v3.2.1/doc/rules/string_notation/string_length_to_empty.rst.

[codecov]

Codecov Report

Merging #503 (6c9a703) into main (46774ff) will not change coverage.
The diff coverage is n/a.

❗ Current head 6c9a703 differs from pull request most recent head 54b2de8. Consider uploading reports for the commit 54b2de8 to get more accurate results

@@             Coverage Diff             @@
##                main      #503   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity         7         7           
===========================================
  Files              2         2           
  Lines             26        26           
===========================================
  Hits              26        26           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 46774ff...54b2de8. Read the comment docs.