feat: allowing amap admin to add negative price

[maximeroucher]

Goal of this PR : Allow amap admin to add negative prices

Description of the added features :

• Change textEntry to support negative integer entry

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 54.01%. Comparing base (87c331f) to head (1411d19).

❗ Current head 1411d19 differs from pull request most recent head 246caec

Please upload reports for the commit 246caec to get more accurate results.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #370   +/-   ##
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  Coverage   54.01%   54.01%           
=======================================
  Files         168      168           
  Lines        3710     3710           
=======================================
  Hits         2004     2004           
  Misses       1706     1706           

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[Marc-Andrieu]

Seems silly, it only changes the UI, but it works and was asked by the AMAP 🤷‍♂️