feat: 5318 - added a "price privacy warning" dialog

[monsieurtanuki]

What

• Added a "price privacy warning" dialog.
• This dialog is displayed the first time the user tries to add a price.
• This dialog is also displayed when the user taps on the app bar "info" button.

Screenshots

As "first time"	As "info" button

Fixes bug(s)

• Closes: Add a one time privacy warning on price addition #5318

Impacted files

• app_en.arb: added 2 labels for the "price privacy warning" dialog
• background_task_add_price.dart: now using new off-dart methods
• knowledge_panel_action_card.dart: minor off-dart impact
• price_model.dart: refactored
• product_price_add_page.dart: added the "price privacy warning" dialog the very first time and in an app bar button
• product_price_item.dart: now using new off-dart method
• product_prices_page.dart: now using new off-dart method
• pubspec.lock: wtf
• pubspec.yaml: upgraded of openfoodfacts to 3.11.0
• user_preferences.dart: added flag for "price privacy warning"
• user_preferences_account.dart: now using new off-dart method

[monsieurtanuki]

We're in trouble:

Any recent change in github's flutter version?

[teolemon]

Can we add a link to change your pseudonym ? https://world.openfoodfacts.org/cgi/user.pl?type=edit&userid=teolemon

[monsieurtanuki]

Can we add a link to change your pseudonym ? https://world.openfoodfacts.org/cgi/user.pl?type=edit&userid=teolemon

@teolemon That wouldn't be cool - UX-wise. Still the old "how can I land on the website and perform and action like edit or delete" issue.

[teolemon]

ok, I've opened an issue for native support at a later point @monsieurtanuki

[monsieurtanuki]

ok, I've opened an issue for native support at a later point @monsieurtanuki

Probably related to the new cookie feature.

[monsieurtanuki]

Thank you @teolemon for your review!

Unfortunately can't merge, as evoked in #5343 (comment)

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 60 lines in your changes missing coverage. Please review.

Project coverage is 7.57%. Comparing base (4d9c7fc) to head (7aff49b).
Report is 169 commits behind head on develop.

Files	Patch %	Lines
...h_app/lib/pages/prices/product_price_add_page.dart	0.00%	26 Missing ⚠️
...kages/smooth_app/lib/pages/prices/price_model.dart	0.00%	18 Missing ⚠️
...mooth_app/lib/pages/prices/product_price_item.dart	0.00%	5 Missing ⚠️
...ib/pages/preferences/user_preferences_account.dart	0.00%	4 Missing ⚠️
...ooth_app/lib/pages/prices/product_prices_page.dart	0.00%	4 Missing ⚠️
..._app/lib/background/background_task_add_price.dart	0.00%	2 Missing ⚠️
.../knowledge_panels/knowledge_panel_action_card.dart	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           develop   #5343      +/-   ##
==========================================
- Coverage     9.54%   7.57%   -1.98%     
==========================================
  Files          325     373      +48     
  Lines        16411   18882    +2471     
==========================================
- Hits          1567    1430     -137     
- Misses       14844   17452    +2608     

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