fix: Appbar now differentiable issue #2635

[Akashsri3bi]

What

Now Able to understand that we have a bar on top of the screen

Part of

• Accessibility / color issues #2635
• Other Parts to be fixed

[codecov-commenter]

Codecov Report

Merging #3172 (1edf02c) into develop (adb7716) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           develop   #3172      +/-   ##
==========================================
- Coverage     6.19%   6.18%   -0.02%     
==========================================
  Files          248     252       +4     
  Lines        12439   12491      +52     
==========================================
+ Hits           771     772       +1     
- Misses       11668   11719      +51     

Impacted Files	Coverage Δ
...p/lib/pages/product/common/product_query_page.dart	0.00% <ø> (ø)
...pages/preferences/user_preferences_contribute.dart	4.72% <0.00%> (-0.14%)	⬇️
...ges/smooth_app/lib/pages/product/summary_card.dart	0.00% <0.00%> (ø)
...mooth_app/lib/helpers/robotoff_insight_helper.dart	0.00% <0.00%> (ø)
...th_app/lib/cards/data_cards/image_upload_card.dart	0.00% <0.00%> (ø)
...ib/cards/product_cards/product_image_carousel.dart	0.00% <0.00%> (ø)
...b/pages/preferences/user_preferences_dev_mode.dart	0.00% <0.00%> (ø)
packages/smooth_app/lib/pages/question_page.dart
...smooth_app/lib/query/robotoff_questions_query.dart
...es/smooth_app/lib/pages/hunger_games/congrats.dart	0.00% <0.00%> (ø)
... and 5 more

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[M123-dev]

Perfect, thanks @Akashsri3bi 🥳