fix: Harmonization between modal sheets

[g123k]

Hi everyone!

The "old" modal sheets were not aligned with the colors of the Product page.

• Orange indicator added  

• In dark mode, when the first item was selected, it had the same color as the header  

• The same for the image source (you can notice a small shadow between the header and the content)  

• User lists: color harmonization + a brighter button  

• Users lists in dark mode: color harmonization  

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 35 lines in your changes missing coverage. Please review.

Project coverage is 6.83%. Comparing base (4d9c7fc) to head (a35cec9). Report is 481 commits behind head on develop.

Files with missing lines	Patch %	Lines
...generic_lib/bottom_sheets/smooth_bottom_sheet.dart	0.00%	24 Missing :warning:
...ib/pages/preferences/user_preferences_widgets.dart	0.00%	7 Missing :warning:
...s/smooth_app/lib/pages/all_product_list_modal.dart	0.00%	4 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #5875 +/- ## ========================================== - Coverage 9.54% 6.83% -2.72% ========================================== Files 325 428 +103 Lines 16411 23593 +7182 ========================================== + Hits 1567 1613 +46 - Misses 14844 21980 +7136 ```

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