fix: 5371 - less ambiguous currency symbol

[monsieurtanuki]

What

• The currency symbol we use for currency edit doesn't give the false impression of forex anymore.

Screenshots

price	app

Fixes bug(s)

• Fixes: Misleading currency icon? #5371

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 7.37%. Comparing base (4d9c7fc) to head (802fe76).
Report is 190 commits behind head on develop.

Files	Patch %	Lines
...th_app/lib/pages/onboarding/currency_selector.dart	0.00%	1 Missing ⚠️
...lib/pages/onboarding/currency_selector_helper.dart	0.00%	1 Missing ⚠️
..._app/lib/pages/prices/price_currency_selector.dart	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           develop   #5376      +/-   ##
==========================================
- Coverage     9.54%   7.37%   -2.17%     
==========================================
  Files          325     384      +59     
  Lines        16411   19636    +3225     
==========================================
- Hits          1567    1449     -118     
- Misses       14844   18187    +3343     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[g123k]

Better like this, thanks!

[monsieurtanuki]

Thank you @g123k for your review!