feat: Convert Privacy warning to bottom sheet

[Afroz-Shaikh]

What

Turned the Open Prices privacy warning into a bottom sheet for improved user experience and better alignment with the UI design standards.
Replaced the current modal/dialog with a Flutter showModalBottomSheet.
Screenshot

Fixes bug(s)

Fixes: #6183

[teolemon]

We're using the following layout @Afroz-Shaikh #5755
cc @g123k

[g123k]

You have the method showSmoothModalSheet + the SmoothModalSheet for the content.
Also, don't forget a SafeArea, otherwise your button with be under the status bar

[Afroz-Shaikh]

Will implement the same using showSmoothModalSheet and SmoothModalSheet
thanks a lot @g123k & @teolemon

[Afroz-Shaikh]

Does this align with the project's guidelines, @teolemon? I've used showSmoothModalSheet along with SmoothActionButtonBar with +ve action —let me know if this implementation is appropriate

I’ll update the code once confirmed.
cc: @g123k