Improved detection of voice broadcast completion during playback

[nimau]

For a voice broadcast, the paused/stopped state event contains a last_chunk_sequence indicating what the last chunk sequence number is.
During playback, we should use this last_chunk_sequence to detect whether we should stop playback or enter buffering state.

[giomfo]

LGTM - just one comment

[yostyle]

LGTM
I'm agree with that https://github.com/vector-im/element-ios/pull/7273/files#r1071324381

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

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[codecov]

Codecov Report

Base: 11.84% // Head: 11.93% // Increases project coverage by +0.08% 🎉

Coverage data is based on head (ee51fc7) compared to base (f8717de).
Patch coverage: 63.10% of modified lines in pull request are covered.

❗ Current head ee51fc7 differs from pull request most recent head f8a851b. Consider uploading reports for the commit f8a851b to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #7273      +/-   ##
===========================================
+ Coverage    11.84%   11.93%   +0.08%     
===========================================
  Files         1628     1633       +5     
  Lines       160358   160587     +229     
  Branches     65540    65640     +100     
===========================================
+ Hits         19001    19160     +159     
- Misses      140718   140788      +70     
  Partials       639      639              

Flag	Coverage Δ
uitests	55.21% <85.11%> (+0.32%)	⬆️
unittests	5.96% <0.00%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
Config/BuildSettings.swift	43.07% <ø> (ø)
...ot/Modules/Room/RoomInfo/RoomInfoCoordinator.swift	0.00% <0.00%> (ø)
...RoomInfo/RoomInfoList/RoomInfoListViewAction.swift	0.00% <ø> (ø)
...Info/RoomInfoList/RoomInfoListViewController.swift	0.00% <0.00%> (ø)
...t/VoiceBroadcastSDK/VoiceBroadcastAggregator.swift	0.00% <0.00%> (ø)
...llHistory/Coordinator/PollHistoryCoordinator.swift	0.00% <0.00%> (ø)
...History/Service/MatrixSDK/PollHistoryService.swift	0.00% <0.00%> (ø)
...ck/MatrixSDK/VoiceBroadcastPlaybackViewModel.swift	0.00% <0.00%> (ø)
...odules/Room/PollHistory/View/SegmentedPicker.swift	51.16% <51.16%> (ø)
...UI/Modules/Room/PollHistory/View/PollHistory.swift	90.90% <90.90%> (ø)
... and 12 more

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[giomfo]

SGTM