[ChatStateLayer] Reset contexts when logging out

[laevandus]

🔗 Issue Links

Related: #728

Merges to feature/chat-state-layer

🎯 Goal

Fix logout issue with duplicate channels in DB.

📝 Summary

While testing the new state in the SwiftUI SDK we found an issue:

1. Log in with A
2. Open channel with A and B
3. Logout and log in with B
4. Open channel with A and B → issue happens (assert telling multiple ChannelDTOs for the same cid)

🛠 Implementation

It seems like when we flush the database on logout, open channel is not flushed. Not sure, but I think it is related to state layer's context which immediately reacts to changes.

☑️ Contributor Checklist

• [x] I have signed the Stream CLA (required)
• [x] This change follows zero ⚠️ policy (required)
• [ ] This change should be manually QAed
• [ ] Changelog is updated with client-facing changes
• [ ] New code is covered by unit tests
• [ ] Comparison screenshots added for visual changes
• [ ] Affected documentation updated (docusaurus, tutorial, CMS)

[github-actions[bot]]

	1 Message
:book:	There seems to be app changes but CHANGELOG wasn't modified. Please include an entry if the PR includes user-facing changes. You can find it at CHANGELOG.md.

Generated by :no_entry_sign: Danger

[Stream-iOS-Bot]

StreamChat XCMetrics

target	metric	benchmark	branch	performance	status
MessageList	Hitches total duration	10 ms	15.02 ms	-50.2% 🔽	🔴
	Duration	2.6 s	2.54 s	2.31% 🔼	🟢
	Hitch time ratio	4 ms per s	5.92 ms per s	-48.0% 🔽	🔴
	Frame rate	79 fps	78.24 fps	0.96% 🔼	🟢
	Number of hitches	1	1.2	-20.0% 🔽	🔴
ChannelList	Hitches total duration	12.5 ms	0.0 ms	100.0% 🔼	🟢
	Duration	2.6 s	0.83 s	68.08% 🔼	🟢
	Hitch time ratio	5 ms per s	0.0 ms per s	100.0% 🔼	🟢
	Frame rate	76 fps	63.57 fps	16.36% 🔼	🟢
	Number of hitches	1.2	0.0	100.0% 🔼	🟢

[laevandus]

I am going to move this PR to develop. Closing!