feat(llc): relisten to websocket events after reconnect

[renefloor]

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Closes FLU-252

CLA

• I have signed the Stream CLA (required).
• The code changes follow best practices
• Code changes are tested (add some information if not applicable)

Description of the pull request

This adds a reconnected stream which is observed by the feed, so when the websocket reconnects it gets the feed again so it's also observed again on the new websocket connection.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 16 lines in your changes missing coverage. Please review.
✅ Project coverage is 3.29%. Comparing base (260323e) to head (2e6afac).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...stream_feeds/lib/src/client/feeds_client_impl.dart	0.00%	8 Missing ⚠️
packages/stream_feeds/lib/src/state/feed.dart	0.00%	8 Missing ⚠️

❌ Your patch status has failed because the patch coverage (0.00%) 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     #43      +/-   ##
========================================
- Coverage   3.31%   3.29%   -0.02%     
========================================
  Files        117     117              
  Lines       3139    3153      +14     
========================================
  Hits         104     104              
- Misses      3035    3049      +14     

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