feat(ui): add StreamReactionPickerSheet

[xsahil03x]

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[codecov]

Codecov Report

❌ Patch coverage is 0.37879% with 263 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (main-design-system@6ac7fc1). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
.../reaction/picker/stream_reaction_picker_sheet.dart	0.00%	179 Missing ⚠️
...ib/src/components/buttons/stream_emoji_button.dart	0.00%	52 Missing ⚠️
...r/lib/src/components/accessories/stream_emoji.dart	0.00%	18 Missing ⚠️
...rc/theme/components/stream_emoji_button_theme.dart	7.14%	13 Missing ⚠️
...flutter/lib/src/theme/stream_theme_extensions.dart	0.00%	1 Missing ⚠️

❌ Your patch check has failed because the patch coverage (0.37%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@                  Coverage Diff                  @@
##             main-design-system      #51   +/-   ##
=====================================================
  Coverage                      ?   34.75%           
=====================================================
  Files                         ?       91           
  Lines                         ?     2598           
  Branches                      ?        0           
=====================================================
  Hits                          ?      903           
  Misses                        ?     1695           
  Partials                      ?        0           

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